Sick setup. I think you managed to use all the deadspace in the JL lol. I feel lame now for getting a trailer.Yes, happy to share. Pics are my previous 2-door, but I'm back in another JLR and wouldn't want a JLU for my needs. I included a pic of my solo/2person setup using no back seat. To carry a third person and leave rear seat in place, I built a platform that goes over the folded rear seat at night and extends just over the center armrest (legs are just long enough to carry the load off the armrest). It's 1/2" plywood 36x48" using 1" dowels as legs attached with studs/wingnuts. Trick is to cut the leg lengths to support in conjunction with the plywood laying on the folded rear seat. It stores in the RTT during the day. The front passenger seat needs to be folded all the way forward. So long as you're under 6 ft, it's actually not a bad space to sleep.
Those grocery totes fit perfectly behind the rear set while it's up and under the platform at night. Bins for gear and cooking supplies ride in the 4th position in the back seat. The key to successfully fitting is the use of the TrailRack over the spare. I ditch my fridge and store a cooler and water jug there. A hitch platform would work as well, but I carry bikes.
There are a lot of ways to do more with less. Carefully choose gear you need to take and it's not as much to clean up when you get home! Happy trails!