On the bed liner option here are some things to consider.
Factory bedliner is about $400 option, is suppose to be 1/2 the thickness of the after market, and the warranty is only for 36,000 miles at the most.
The Line-x is only about $550, is twice the thickness of the factory, and the warranty is life time.
With a heavy camper, lots of miles, and pulling the jeep I think all adds up to another diesel. Drop one of the three and you would be a candidate for the gasser. Once you run the auto for a while you will get use to it. Still easy to get it down into a lower gear if you want but nice not shifting. I'm still getting use to mine coming from the nv5600 but have only reached for the clutch once. Think it helps that my first truck was an auto.
My father retired 23 years ago. After a couple of years he started giving folks near retirement some advice: "If you have anything you want done, get it done before you retire because once you do, you want have enough time to do them."