Find an L, I'm sure their first step will be to get an extension and then they will help you get properly prepared for the battle ahead.
Extensions are part of the process.
Take time a decide what is important for you and have the lawyers argue that. For me it was my time with my kids.
Compartmentalize things. Makes it easier.
PARENTING:
50/50 is best for the kids. I know things for you have not been like that, but you can have a plan to get there.
Anything less than that and I would get "Right of first refusal" in the parenting agreement.
ASSETS:
There will be a balance sheet. House cars etc. Figure out the VALUE and do not share this with W. Let her claim value first. Does she want it on her side or yours. Decide if it fair. If not, you can counter it.
CHILD SUPPORT:
Child support is typically just a formula based on father income/mother income/overnights with mom/overnights with Dad.
"What is best for my kids is best for me" Amor Fati Link to quotes: https://www.divorcebusting.com/forums/ubbthreads.php?ubb=showflat&Number=2879712