There is a lot to think about. Of course, a lot is what he is willing to do.
As far as separating things, we both made a list of things we really really wanted. We then compiled and both signed that list. Luckily there was really nothing on each others lists that either of us fought for, so that worked out. Other than what I really really wanted, I did not care. He got tired in the moving process so it all worked out really fairly.
Good luck, I hope he agrees and you can move on quietly and quickly.