Revisiting this with an update after a couple of months! Thanks, everyone, for all the recommendations. On the home modifications, our HOA was having none of it. We did consider talking to a contractor we'd already spoken with about removing door casings, but that would have left us with the issue of a bathroom with no privacy for guests or family, outside of perhaps putting up a curtain. All that considered, plus the fact that I was having extreme difficulty getting into our van, I made some health changes. I'm currently right at 600 pounds and probably want to be around 525-550. That seems to be my sweet spot, where I can drive, go places with my husband and friends, and still be a supersized fatty.
In fantasy, the day when you're too fat to leave the room you're in is amazing. In reality, not so much, especially when it comes to hygiene, and I was VERY close to it.
3 days