I'm not sure I'm the best person to respond, but I just want to say I'm working on the same things, too, and I wish you the best of luck!
Not being drunk around the kids sounds like a good start... a necessary step to ensure their safety. I think not passing out/blacking out may be difficult to enforce. What happens when he drinks away from the family? Can you be sure that he didn't pass out or black out? What if you suspect, but can't prove? What if he fesses up after the fact, will you follow through?
Just some thoughts, and warm wishes...