I think your rig is set up just fine, infact is pretty close to the way mine is set up. as for the trails, they are not friendly at all. body damage is probaly going to happen so if your worried about that this is not your run. as far as the family goes, it is a family friendly trip with exception of the landscape and the weather. last year we froze are butts off for the first half of the day, then it got really nice, then we froze again at night.
another thing, are you driving the Jeep down for the event or does it ride on a trailer? this is a hard trip to do if your driving your trail rig home. things happen in Johnson Valley.
I would love to have you on the trip, let me know if you want to go. I bet you would be the only 4 door out there.