I have never been, so hopefully someone can provide some better first-hand knowledge. But my estimate based on hearsay would be that it would be like other parks in the area (AL, TN) where there is a lot of hard stuff and some easy stuff with not that much moderate. AND most importantly that weather (rain) can have a huge impact on conditions.
I know I have said it before, but if you have 4-5 TJs on 35s (or similar) that want to wheel for a weekend. I recommend Hawk Pride, it would probably be a little longer drive for those coming from the GA and east TN area but well worth it. Hawk pride doesn't have the scary steep, it has plenty of rock, and it has a lot of moderate trails.