You've gotten a lot of good advice. I'm local and spent 3 seasons racing an SV in lightweight classes, Mid West CCS, mostly at Blackhawk Farms. It sounds like you are ready to race if you are inclined to. If you are running 1:25 or better you'll be mid pack in the Novice classes. Also if you're into a mellower experience AHRMA is a great option, there are 2 midwest rounds, the pace is slower, and there are spectators, which really adds to the experience. Don't worry too much about prep, I've seen so many guys spend a fortune prepping for CCS, including myself, but in hindsight I feel that you don't need much to be competitive. I'll never forget riding on slicks for the first time, I was really pushing it, and I got passed by a guy in a Learning Curves (that means its his 1st race) riding an SV with street tires and turn signals.
I hope you have fun! I had a blast. I've been off the grid for three years, racing AHRMA at Road America and Barber this year. I can't wait.