I'll be racing at Hillbilly Hustle as well. I haven't done this before, but two friends did it last year and said it was a blast. I'm looking forward to it, but don't have any course info to share. I do know it's on a farm.
I would not say it's any faster than any other cx race. the course has a lot of turns which slow down the front section. The back section tends to be pretty fast since there are some straight parts you can really open it up on. Your gearing should be fine.
Donkey balls! I woke up at 4:30 this morning, loaded up the car and drove 2 hours down to Elmer... only to find out that the race is tomorrow. On the brightside, at least I won't have to load the car in the morning.