Jason, Sounds like a well thought out plan. Many instructors are fortunate when the teach a class overe and over during the year as they begin to find extra material but there always insn't enough time. So these ought to be the be the kinds of material that can be reserved for back-up use, regardless of the reason. I have also found material I had planned as backup has become mainstream because of it's effectiveness. So there is some "auditioning" benefit to having good back up material. Barry Westling