As a follow-up to Anvil: does your attorney believe this is the best thing too?
I'm asking because in retrospect, I should have been much more demanding, and asked for full legal and physical custody - but I think part of why I didn't was that I was afraid of how he would respond, and in a hurry together the divorce finalized.
You may never have a better opportunity than you do right now to give your children the best situation possible. Don't compromise.