I don't remember the site numbers and can't (quickly) find a site map online, but it really won't be a problem since we'll be the only group there.
The campground is basically a big loop with one entrance/exit road. The best sites for our group tend to be near the top of the loop, when viewed from the entrance/exit road. Opposite end of the camp from the privy structure.
Edit: For some reason, I keep thinking site #14. Not sure if it's a valid thought, but if you get there and see that site number near the top of the loop, you're in the right area.