Kevin, advance cooking is great!! I actually do this a lot, and it's not a big deal. Sounds like you have a vacuum sealer, so you're set!
Butts can be done a couple of ways. First, you can smoke the butt until done, then double-wrap in HD foil. If I know it's a butt for later, I immediately seal the foil-wrapped butt in a FoodSaver bag, and straight in the freezer (after it cools a bit, so I don't unintentionally defrost my freezer!). The second method is to wrap/rest the butt for an hour, then pull like you were going to serve it right then. Vacuum pack the pulled pork and freeze. The advantage to this method, is that you get to sample the pork!
Reheat the bag in boiling water, and serve plain...let your guests add sauce if they want. The reheated pulled pork is just like when you froze it!
If you are planning on chicken wings, I can't help you. If you are smoking leg quarters, and want to crisp the skin on the grill, I would recommend smoking to about 150, the vac sealing and freezing. When they are thawed, you can bring them to room temp, and finish on the grill. Just check they're at 165 before serving. OK to under-cook, if you know you have to finish cooking at serving time.
Ribs are just as easy! Smoke ribs until done, then vac-pack the 1/2 rack cuts immediately. Thaw in the fridge, the reheat in boiling water (in the bag, of course), or out of the back in a crock pot with a little apple juice. Put a 1/4" of apple juice in the bottom, set the racks in there on edge, and heat on "low" for a few hours. Works great!