E.T.
I think you guys needs some counseling, not a divorce. The things that you are describing are totally fixable as long as both of you put in a little effort.
In my opinion, there is NOTHING worse than going through a divorce with children. If you think you have chaos now, if you think you feel overwhelmed now, divorce isn't likely to change that. If you think you fight now, you will most likely continue to fight just as much when divorced.
Do everything you can, try everything you can, leave no stone unturned and THEN think about divorce.
Seek out a counselor and read the book "The Five Love Languages: How to Express Heartfelt Commitment to Your Mate" by Gary Chapman.