What an amazing turn your sitch has taken. Of course I think that your husband would be crazy to walk but it's nice to see that he seems to re-thought his decisions, and you have to hand it to him, he seems to be doing all the right things. Actually, I think he seems pretty determined. I'm so happy for you!
You're right though. If things happen, and it doesn't work, you will be just fine. You are nowhere near the person you were when you started on this road.