i could see buying extra fairings if you were doing two track days a month. if you are only doing a few a year there really isn't a point in it. as for the bike. i would just try to find a great deal on a used 600. brand doesn't really matter nor does the body work. scrathes on fairings, dent in tank....so what odds are you are gonna dump it. at least with me that is the case. i bought a used 08 r6 on the cheap. guy said it has some scrathes, missing some bolts here and there and charging system didn't work. solved all that cheap and quick. my son rides it when we go out riding now. when i go to the track i just use the quick disconnect on the turn signals, tape up headlamps, drain coolant, and go. just leave the safety wire stuff on all the time.