Well done, I find jeep storage is an art since it's really a lot smaller than it seems.

I'm assuming that you have a roof rack or spare tire rack for when the gas cans are full?

I'm no where in the same league but one difference is that I use bungies _and_ velcro straps on stuff I've attached to the rollbars, slight overkill but the stuff doesn't move and bungies make me nervous. (although you seem to have some redundancy)

What's under the floor mat (where my now removed sub-woofer is)? And have you looked at the rear door table systems? (https://smile.amazon.com/u-Box-Wrangler-07-18-Tailgate-Foldable/dp/B07W5SM784) I use the molly straps to hold stuff and it works pretty well.