I'm so sorry to hear about your troubles. I'd say try and deal with one thing at this point, and look after your health (be selfish and let your husband look after himself for now)
Just to share my experience, when my first missed mc was diagnosed I chose to wait a week to let it happen naturally. Nothing happened so I opten for the surgery. I did this because the pregnancy had ended at 7 weeks and I was already 12 weeks when I found out, so my body was clearly not ready to naturally miscarry the baby and I worried that it might have taken a lot longer. The week's waiting was horrible, not wanting to leave the house just in case, knowing I was still pregnant, and all that goes with it emotionally.
Since then, I've had several more missed mc's and have always chosen surgery, as at least you know where you are with everything, the recovery has been quick (physically speaking) and the post-op bleeding has been minimal with all but one of mine.
It's a very personal choice but hearing about friends who've chosen to miscarry naturally or rather, who had no choice, it does sound painful and imho, more traumatic than surgery. I know the waiting is horrible and you do wonder if something will "appear", but I think you have to do what feels instinctively right for you. Usually by 6-7 weeks a heartbeat is detected. I know what that wait feels like, so I always choose medical intervention so I can get life back on track as quickly as possible.
Just as an aside, I have now had 5 ERPC's and three were done with no prior "help", but with two of them I took the (awfully named) "abortion" pessary a couple of hours before the op and i have to say it cut down the post-op bleeing as it gave the surgeon less need to be "thorough" if you see what I mean, as the process had already begun (although I felt nothing at all before they put me under).
You take care of yourself and do what feels right for you. Most of all, keep asking questions and ask for as many scans as you feel you need before deciding what to do.
I've found this site really useful for sharing experiences, so hope this helps you too.