There are a couple options for a true Nano coating I use this one you will need 3 of them maybe 4
https://www.amazon.com/Nano-Bond-Cer...e%2C212&sr=1-6
Here is another option, not as long lasting but more affordable and maintainable
https://www.amazon.com/dp/B07B7D9NW4...v_ov_lig_dp_it
Our Class A had a Paint Protection film on the front and it really saved the paint. I bought a New Wrangler Sept of 2018 paint color black, I had the entire jeep Wrapped in 3M to day after more than 1500 miles of off road paint still looks like new. If you are concerned about protecting that $10K Paint using a PPF on the front cap will keep it looking like new for 10 years (which is 3M's warranty)
Note before you apply any Ceramic you need to clay bar the entire paint surface to get all the oxidation and old wax off if there are any.
The for cleaning I use a dry wash just spay on and wipe off this will also add a quick wax coat on top of the ceramic.
https://www.amazon.com/Waterless-Oun...e%2C210&sr=1-2