Actually I think this first run is better to be a casual / mild trip. Gives everyone a chance to become acquaited, and comfortable as a group. Easing into the more serious trail runs later. There are plenty of different places to try eventually. The citrus tract over in inverness has some great washouts, and scottsmoore can be fun too. I have yet to do any extensive rides in ONF, but there are supposed to be a few good places there too.