A couple other events I'm interested in doing this year:
BMWCCA August 24-26 (if we sign up now, more than likely all of us will get in and we will have a great group together).
Watkins Glen September 21-23 (I'd only sign up for Saturday and Sunday)
I've been to Watkins Glen and helped out with the Bimmerworks Race Team for a 4 hour sprint race (we came in 3rd overall), but haven't been able to drive the track yet. It's a very historic race track and I stayed in Seneca Lodge, which is where the F1 teams used to stay back in the day.
Great track and great setting.