Nice! CMRA, huh? I guess you're in/around Texas or so?
I used to race little 50s, then moved upto 125s, and it was a helluva a lotta fun, but even that's a money pit. Move upto the middleweight/superbike 4-stroke bikes and you're talking a LOT of money.
For 600s & 1000s, I also just do trackdays/canyon carving and that's it. No pressures of racing, just having good fun.