1. Don't leave..he should leave and support you and the kids in the house.
2. I'm not sure about the abandonment rule in your state; that's a question for the L. Ask it!!
3. The kids need a little disruption to their lives as possible. But since your kids are older and they know the sitch now; maybe discuss the possibility of moving with them. They might surprise you with the answer, ya never know. When my parents split, (I was 10) I was happy to move and get away. I guess I needed a change as well. If it will make it easier on YOU to move to some place cheaper; I'd consider it an option so long as it doesn't jeopardize your case against the H. Again another question for the L.
4. Any question that comes up in your mind about your sitch, write it down. That way, the next time you discuss things with your L; you'll already be armed with questions. Potentially, this will make things cheaper as you don't keep going back to your L with questions that take up billable time.
