Okay, here's what I see, and it really really sux to talk about this. Sorry.
You are proposing to throw yourself into the maw of the court system.
Do you have faith that you will be able to keep the house without too much protest from her, and keep custody of the minor children with her just having visitation? 'Cause if not, many would say that you will be *ahem* not happily served by the court system.
The wise men who have been before you on this path say to never leave your house. Just hang in there as much as possible.
Gee, now there's a recipe for complete glee!
Statistically, it's shown that "bad" marriages that can be held together even when bad, within five years are called "good" marriages by the principals. So, it may behoove you to suck it up and make some 180's without using that D word.
How's that for being completely non-helpful????
As you can tell, I have absolutely no good advice, no helpful words, no wisdom on this. It sometimes all just seems like a shot in the dark.
Many times in the foggy past, my decisions were helped along by not "which one is better?" but "which one will I regret the least". Seems to work okay for me.