I'll have to take you up on the Skippy set-up you have. I only did one race last season but I have always liked that car. You gonna race at Spa in our GT3 series this Sunday?I have driven the Star Mazda, but not in a while. There used to be good setups on the forums, haven't checked in a while.
My suggestion is the Skip Barber. It is a lot of fun to drive and there are races every hour. The races I run late night east coast time are always really clean also. If you need a setup, let me know. I have one that I use everywhere no matter what the weather. Check the forums, there is a good setup guide in there.