Starting the track as a nonprofit (501c3) would be very time consuming. I suggest you start it as a business and work from there. For a rc track, the cons outweigh the pros for going nonprofit.
If you get ROAR insurance, EVERY person who goes on the track Must be a ROAR member, which is $30 a year. That is fine for most people, but for the guys who just want to come once or try out the cars, it will shy them away. While it is a cheap way to get started, I think it is much better in the long run if you get 1 or 2 million dollar general liability. I have $2 million liability and its not anything like I thought it would cost.
Good luck with your endeavor, you will need it.
