Horse, you've started a lot of threads asking a lot of questions, and I'm afraid you're moving too fast on the actual work without knowing what it is you want when you get done... Hard to stop now that you've got the room demo'ed.
Use in-wall (aka CL2 or CL3) speaker wire (Monoprice has the stuff), and cat5e or cat6. Run a cat5e to locations at switch-height for potential keypads. You can either put a low-volt mud ring there, or document the wire locations, secure them and hide them behind the drywall.
But the question is going to be - run wires to where? Everything has to connect to something else at the other end - are you going to have a path to a central location? If not, bring everything to wherever your equipment will be in that room.
Not really a lot else we can do to help you at this point - you've lit the fuse.