Lisa, you are on the what if's again. You've put yourself on a treadmill looking at all the worst case scenarios and going round and round in circles. From one who has been there, there is only one thing that happens if you stay on the treadmill too long, you crash and burn.
So ok, you kept your ever increasing troubles from hubby but you have come clean now and he has not said, I'm off, but let's go for an iva. Instead of arguing about the money, tell him how worried you are it's not going to get accepted, tell him your fears. Tell him you don't ever want to keep anyting from him again, so can you please discuss. If he blows up, give him time to mull it over, face the possibilty of it himself and talk about the options you have should that happen.
Also, please go and see your GP about your worries as well, they may be able to give you some antidepressants just to see you through this very difficult period. Most of all, remember that no matter what happens you and hubby still have each other and the kids and that is priceless.
Thinking of you
Ann