I'll be out there with my brother on Sunday the 20th most likely. Not sure if my car will clear customs in time to make it to the event, but he runs his E92 M3 there regularly.
Speed Ventures is a very casual group. The events are mellow and fun. They run cars in groups based upon experience. You can have passengers too which is nice.
The track is great. The oval is certainly the special part and is slightly intimidating. The rest of the course is cool, but there isn't any elevation change or anything.
If you end up coming out say hi to us. His M3 is white and he uses the stock 18s for his track set up.