I wouldn't be too quick to move anywhere early in recovery. As I've said, I have my doubts about HIS recovery, but assuming for the sake of argument that he really is serious about it, major changes aren't a great idea. You already have a baby coming, which will be a major change in itself.
A lot of people believe that the change of scenery will do them good (AKA the "geographic cure"). If YOU have support there, then it might not be a bad place to wind up--I just wouldn't suggest piling a move on top of everything else you've got going on right now.