Oz Tent makes terrific products, but they are heavy and bulky and in my humble opinion more suited to vehicles larger than a TJ/LJ. That doesn't mean that I don't like Oz Tent products. To the contrary I really like their stuff. Its just that most Oz Tent products are not well suited for small vehicles with extremely limited storage space.
I checked the link. The Oz Tent Foxwing awning, two side panels plus tent will top out at 112 lbs.
For comparison purposes, my Noah's tarp with poles and rope weighs 5.5 lbs. and my Kodiak Canvas swag tent with mattress pad weighs 20.1 lbs., total 25.6 lbs., and if I want to save weight I can use my ALPS Mountaineering 3 person backpacking tent (5.1#) instead and bring the total down to only 10.6 lbs. vs. 112 lbs.