I don't envy you and what you are having to do. There is experience here on the D side also, if you have any questions on the paperwork, fire away. I'm sure someone here has experience to share.
Here is a great website for both you and your H to view http://www.uptoparents.org it offers guidance in regard to your kids. It's very informative.
The biggest thing I can offer, is to maintain your dignity. A D when all of the emotion is removed is a business transaction. You are negotiating for assets and liabilities. The final decree is also a legaly binding document. What ever you sign your name to at the end of the day is a contract. The wording in the contract should not be taken lightly or assumed to be negotiable down the road. Because this is a contract, DON'T RUSH THROUGH IT!!
This was a tough time for me. It really signalled the end of what I fought for. If there is anything you need, just ask.
There is experience here on the D side also, if you have any questions on the paperwork, fire away. I'm sure someone here has experience to share.