I plan to coat the whole inside and then bottom with some type of bed liner.
This roll on stuff is what the instructions recommend.
https://www.durabakcompany.com/collections/bed-liner/products/durabak-bed-liner-outdoor-textured
I may also get a quote from a local Line-x place.
I guess the positive side of the roll on one is I could take the panels all off and then coat them separately then reassemble that would allow me not to cover the bolts in case I ever needed to replace a piece due to damage.
That being said I am leaning towards Line-x because I could have it sprayed and would likely never have to worry about it again.
The outside is getting painted to match the Jeep.