i wouldn't save it..
if you know how it is going to be don't waste time trying to save anything.file the bank ruptcy and be done.been there done that didn't want to and it is kind of embarrasing.
but i,like you,knew where i was headed,,if you file,file "7" an be done..like said as far as saving material stuff,you will have show all you finance stuff from 6 months til the bankruptcy..you will have to show where you sold stuff how much and to who all income and all going out..
as far as you and this is my opinion only..you can't make her want to be with you,it will drag you down and things WILL get ugly,they most always do..be there for your kids always,don't use them as tool vs the wife,hopefully that works both ways.if you have 50\50 custody how will you be able to fish as a pro?at this point i wouldn't worry about the fishing.
not trying to sound self centered but it is what it is,she will never give 100% of herself to you and after knowing how she feels you will be different too..sometimes it is better to move on than try to make things happen..