OP I'm so sorry you are going through this. I don't know if my story will help at all but here goes.
A few years ago I had a termination for mostly practical reasons even more practical than yours, if I may say so. We were only a few months into the relationship, not living together, both skint, would have been big immigration problems. I was torn about what to do but my boyfriend was really looking at all the practical issues and saying he thought termination was the right thing to do. So I let the practical issues win out, even though emotionally I was maybe 50/50 about it. I remember I finally agreed to do it because, like you, I just couldn't deal with the anguish of having to decide anymore so I just made a decision, just to have it over with.
I had to have a surgical procedure. I know for some people it's not so bad, but for me it was incredibly painful, I actually screamed. I'm sorry, I don't want to scare you, but I wish someone had warned me instead of saying 'Oh if you can handle a smear it's not much worse.' It actually felt like torture.
Afterward I felt okay for a bit. But then it really hit me what happened and I fell apart. I kept telling myself all the practical reasons again but it didn't matter, emotionally I was just broken hearted. I blamed my boyfriend, which I know wasn't fair, but I did, and it almost wrecked everything.
I was depressed about it for a long time. Tbh I don't think I really got over it until I fell pregnant with DS.
I am very pro choice and I don't think early termination is morally wrong. But reading your posts, I see a lot of emphasis on what your DH wants, and various practical issues, and not enough attention to what you want emotionally.
If you have any doubt at all, then I think it is very risky to go ahead with a termination. Maybe you will be fine with it, maybe it will haunt you. I know one of my practical reasons was also that we had a long trip planned, but when we actually went away all I could think sometimes was 'I can't believe I killed my baby for this.' I know I was being hard on myself, that's not why I did it, but like I said, I was really messed up for a while.
Sorry this is so long and maybe not helpful. On a positive side, I should say that now, years later, it's really fine, I can see that I probably did the right thing, although I still regret it. But as someone said earlier, it's not like having the termination puts everything back to normal, and I would really recommend counseling if you do decide to go through with it.