Is your trailer's weight "dry weight", meaning what it weighs empty? You need to consider total weight, when it has a full load of water, gear, food, equipment, clothing, etc., when determining towing capacity. IMO, you'd be severely pushing a Wrangler's limits to the point of the rig being dangerous. And, you'd definitely need brakes on that trailer. I'd opt for a pick-up; a half ton PU can usually handle at least 6500 lb tow weights. Just because a vehicle may pull a load under ideal conditions, doesn't mean it will handle it in emergency conditions or panic stops or even when your tooling down the interstate and getting blown around by semi's blowing past you.