OP, I know you've made your decision, but I just want to add something if it's okay.
Sorry this is probably going to end up really long - and late if I take a break to eat as I invariably will have to.
I found your thread very interesting because DH and I have had an almost identical argument with the main difference being that I'm not actually pregnant. In some ways I think that's lucky because it means there was no urgency to our discussion and it was still hypothetical. Nevertheless, I found it very hurtful and frightening that he would completely shut down the idea not only of home birth but of waterbirth as well. (I think it started because of an offhand comment he made).
I actually have a child from a previous relationship whereas he has no children, so part of our discussion was coloured by the fact I have done this before. My ex wasn't particularly involved and had no preference about birthing, so it was really new to me that DH would come in with not only an opinion at all but what I felt was a very forceful one. I can't remember the exact wording but it was very clear: He was NOT okay with me having a homebirth and he didn't want me giving birth in water.
Then it became an argument because my immediate reaction was defensiveness and fear. I felt as though he wanted to override my bodily autonomy. I felt like he was trying to control me. It was so alien to me because he is not a controlling person and I found it really shocking. In turn he was shocked by this because he felt I was pushing him out.
But here's the thing - you're going to be parents together. If you're clashing over this then what that actually means is that he CARES - and he isn't just going to let you go through this on your own. My ex, the one who controlled every other thing, he didn't care. I thought that was empowering (or maybe just convenient) at the time, but it was actually just alienating. I made every decision about our child alone, and any time he wanted to make any decisions he didn't consult me either and it felt like an attack I had to defend our child from, our parenting was a mess. (We did have other issues). But shared parenting, proper, teamwork, in-this-together shared parenting is different, and it's hard. There are so many rewards to it of course, but it's not as simple as seeing this as something you're going through by yourself. You're entering into a new phase of your marriage by becoming parents, one which is going to be tougher than anything which came before, and actually decisions about where and how to give birth are just a tiny tip of an iceberg here. You're going to have a lifetime - your child's lifetime, of coming up against situations where you disagree and need to find a way through without feeling betrayed or attacked by each other, and you'll need to find a way to discuss things which are acutely painful and which genuinely feel like a devestating attack on your person. I actually think that although you've got lots of praise for your compromise on this thread, making the decision on your own based on what strangers have to say isn't quite the right way to go about this. You mentioned that the compromise you've come to is not what you really want, and I think that's because there's another way - you've got to talk to your husband, and keep talking until you find the place where you are genuinely both happy.
I know that sounds ridiculously simple, and was probably the first thing you've tried to do, with MN being the back up or last resort. But I don't mean talk to your husband. I mean talk to your husband. Not about the surface issues or safety stats or distances to hospital, this is your chance to practise discussing these issues - because when one of you wants to sleep train and the other doesn't, or you disagree about when to stop breastfeeding, or how to approach discipline, or whether to pull your child out of their current school, or how to approach your teenager's rebellion, you're going to feel like this again, these feelings of being out of control and not listened to are going to come up again and you have to work out how you're going to deal with these situations as a couple. It's all good - it's all healthy but you have to learn the skills and that takes work. It would be incredibly helpful if you can get at least a rough framework for these massively emotionally overwhelming, life-or-death seeming decisions down now, before your child is actually here, before you're so sleep deprived you don't even remember how to be nice to each other. (This is what they mean by "A baby is like a bomb going off in your marriage".)
So what I mean is you've got to stop discussing the issue from the position of trying to convert each other to your own side. Instead try to discuss the issue from the position of a fact-finding exercise, trying to understand where the other is coming from, really genuinely deeply understand it. It can help if you try and work out - not what it is that you do, or don't want [the other] to do, but what you're (each) hoping to achieve with your way, why you want to do it that way, what exactly it is about doing it that way which is important, what are your fears regarding the other's preference, all this stuff, all the whys behind each reason until you get down to the root. You married each other for a reason - you must have admired and respected each others' decisions in the past, so it's strong emotion clouding this one because you're both as equally as invested as each other. You will quite likely find that once you get to the root of the issue, you both actually want similar or at least compatible things.
Once you get to this point, which is the hard part, BTW, and might take several attempts, you're in a place to discuss properly. And then maybe make a pact to start again from scratch with your research - together. Because you might be the one giving birth, but wouldn't it be awesome to have somebody totally on your side from the start who you know you can rely on? I think that unwittingly, you've left him behind by doing all of the research and reading and talking to midwives etc on your own. (I'm guilty of this too - I do it all the time, I'm still working it out). I know that I felt angry because I felt like I was researching and trying to read and understand and yet it felt like he'd just formed an opinion and plop - there it was with no consideration or thought. I think that I felt like that made my opinion more important or worthy, as though I'd worked harder for it - when really I hadn't actually changed my mind very far at all from what I'd originally thought! My research hadn't been earth shattering, it had just been me gathering information to support my own position. That is a really hard thing to admit, but think about it. I doubt you went from "planned c section" to "home waterbirth" just from reading things online. You probably started in a position very close to the one you're in now. So start the research again together, from a fresh page, and talk about each step rather than getting into that self-confirmation bubble (which is especially easy to do online.) Considering an alternative option or viewpoint does not mean you have to take that option. Keeping an open mind and genuinely thinking other options through is helpful - challenging your own views also helps you see if they're really right for you or not. Keep talking, talking, talking, about everything, until you're sick of it, but until you're genuinely happily on the same page.
It is not so impossible - in reality, there will be a range of birth options (the parts you can control anyway) which are acceptable to you, and a range of situations which are acceptable to your DH. You're both fixating on one particular scenario each because of the opposition and because it's such an emotionally charged decision that you feel it's important to get right. If you're really unlucky then what you may also be doing is pulling away from each other in order to "make up for" (what you feel is) the irrationality of the other. For example, if you feel that his opinion is unsupportive and cold, then you may fear that he would be unsupportive in any environment, which could push you further away from options in which you already feel insecure, even though you might be okay in that situation if you knew you could count on the support of your husband. Conversely, if he feels that your opinion is reckless, then he may fear that you might make reckless decisions in any birthing situation, and hence push more towards options he feels have more emergency back up, whereas he might be alright with less if he knows 100% you would make the safe choice in an emergency situation. Again, it's just about going into that root place with the fears and finding what's important to each of you and how you can meet all of those needs.
Well. You might think I've just written a load of bullshit
but I hope it's helpful in some small way, and I wish you the best of luck with the birth.