I think your approach is a wonderful way to look at going back......will be keeping you in my prayers also.

I think if you keep that place as a just in case, but go back into the marriage to show you are giving it your all, is probably the best. You can always leave again if it does start to feel like its going in the wrong direction & you have enough support around you that won't allow it to get back to where it was without saying something & encouraging you to take positive action to take care of yourself.