Yeh, don't go! LOL! I don't care too much for riding dirtbikes at URE due to all the loose rocks. I'd much rather go to Brown Mountain. I'd say you might want to avoid Daniel if you haven't been riding dirtbikes much lately. The hills and ledges on the one end could be trouble for you. Everything else will pretty much be the same and have bypasses around the rocky spots.
I've had a couple of hard diggers down there back in the day. I had a head on collision with a fourwheeler on the Sawmill trail that sent me over the bars and out into the trees. Also had a rock turn under my tire, that threw me down causing my rear subframe to get bent over a few inches, then put me down hard onto a rock that did a number on my knee.
Oh yeh, run higher than normal pressure in your tires, like 15-20 psi to keep from getting a flat. Take a pump and patch kit with you so your day isn't over in case you do get a flat. BTDT a few times from forgetting to air up for the place.