Toy Hauler for a JKU
#2
That's a ton of weight to put in the back of a trailer. Weight distribution wise, you'd need to have a very heavy trailer to offset that weight in the front 2/3 of the load. You'd be better off going doubles and pulling a flatbed behind a 5th wheel.
#3
I have an aluminum 40' gooseneck with 20' garage and 20' living quarters. Triple axle 18,000. Made by Essix. It is really classified as a race trailer and what you should be looking at to haul something as big as a jeep. Racingjunk.com is a good source for race trailer and toy haulers.