As far as I'm concerned you did ask the right questions ,,, he just didn't answer them.
"I insisted on full financial disclosure, we talked about what debts we each had (he said that his truck would be paid off in a year...not that he was in default). "
You have nothing to be guilty or responsible about (apart from having a kind heart!) since he had already said he was going to move and about his finances.
I know I'm not telling you anything you don't know but you and your girls are your priority and you must protect them and not give up any of your financial independance that you worked so hard to get.