Glad to see it can and had been done. You all have some pretty taken some pretty cool trips.
Can't help but wonder if I am I the only one who worries about overloading the stated payload capacity?
Nope you aren't the only one! I just didn't have enough sense to think of it on that first trip. Now I am far more conscious about it.
In my case, that roof rack that held the tent was home made and weighed WAY too much, and that drastically ate into my payload.
With my new rig, I am always keeping in mind how much weight I am bringing along -- and not only how much, but also where it's located. For instance, 200 pounds in the back of the jeep might be fine, but stickout out on the basket adds a dimension of strain that needs to be thought about.
I think we are safe to go over stated payload by a small bit -- your suspension, tires, terrain, etc. will all have an impact on how much is safe -- but it is a number that should be kept in mind.
When in doubt, the Unlimited tows a trailer very, very well -- so if you need the space, I'd recommend that as an option as others already have. You should be able to tow 3500 pounds or so, which is PLENTY for most kinds of trips.
And finally -- those little baskets are very handy for adding a few extra cubic feet in an action packer. That one cost me $120 bucks and works great. It can/does eat into approach angles a bit but depending on your trip it may be a good option.