I would also like to say welcome! I was in the same boat as you, just an XJ. And nice ZJ by the way, very clean.
Windrock is incredible. From west Knoxville, it's probably around a 25 minute drive max. It's huge mountain, tons of great people, and tons of trails. Going with someone experienced on the trail is key. Here's a few tips and pointers.
Recovery gear is always a plus. Rather safe than sorry. You'll be good to go with a rear trailer hitch and front tow hooks.
Armor is another case of rather safe than sorry. If you don't have any, you can just pic up a transfer case skid and gas tank skid. With that you are covering the vitals.
You already have a CB. Most clubs require a CB. The trail leader (along with everyone) will ya where to watch out for stuff, and just to chit chat. It's pretty cool.
You can wheel without recovery gear and armor, but it's just safer that way. Like you, I need to drive this thing home
Just go out and have fun!