I can understand all of your concerns except for the seatbelt. The seatbelt keeps you in place after a crash allowing for a fast exit. If it is not a crash situation it is easy to hit the release as or before you come to a stop so it is not it the way for fast egress. I find it hard enough staying in my seat with 1.3G direction changes while wearing the seatbelt (auto-x), without it I would likely end up in the passenger seat.
Granted in your position you have to weigh the pro's and con's of everything, but for everyone else here is a sample of what happens.