I worked as a TA when my daughter was younger. I enjoyed leaving the job behind at 3.30, though there was a certain amount of frustration. Now I'm back full time teaching I'm wondering if it was the right decision to return. My now teenage daughter does complain about me never being available to discuss things with, and i don't really have weekends any more. I think part-time teaching would be the best solution. I think you might want to give it a bit more than 2 years before you make any drastic decisions though. I hope it works out well for you.