Carter....it sounds like that is a good set-up that he is in....for both of you.
Just make sure that the boundaries are for you...and not a set of "rules" you are making for him.....
another thing...it is up to you whether you voice the boundaries to him or not. Your choice. Remember that the boundaries are for you and you don't have to share them if you don't want to.....
One place where the boundaries come into play could be if he starts to pressure you for him to come home before YOU are ready for him. The spouse will frequently give in to pressures from the alcoholic. They can be good at putting on the guilt trip when they want something. Codies gravitate to guilt like moths to a flame...LOL....