OH, and don't go being all noble and not revealing his cheating when it comes up (and it will). I refrained from telling the world what kinds of things my ex was up to before I divorced him and all the while he vilified me to EVERYONE we know. Don't be too 'classy' to keep all of it to yourself. But don't reveal it in a way that makes you just look petty.
The one thing I wish I had been more of during my entire marriage and especially my divorce was strategic. He has been strategic in what is going on now that he has his eyes on another prize. Don't let him off the hook because you don't want to be some stereotype ex wife. I went totally anti-stereotype and it didn't help with the family, the kids or any other area. It didn't make me better (yes, I thought I would be "the better person"), he just screwed me over and I HELPED him by being passive regarding custody and finances.
Sorry guys. I bought into years of conditioning and didn't want anyone to think I was a "gold digger" or what have you. 20 years of marriage (or 7) and 3 (or 2) kids is not just some game to get his stuff. Real life marriage has real life consequences. Don't let him off the hook or put yourself on it. Fair is not mean, greedy or grasping.