That's pretty much what I do. I just do it based on lessons. Get one from BGU down, then move onto one from another course or a song I'm trying to learn. Once you're into the BGU Solos, SWS really compliments it when it comes to learning how to improvise with the skills learned in BGU.I have both but don't try to work on them concurrently. I flip-flop from one to the other. Maybe SWS for couple weeks, then BGU for a couple, or more.
Tim