Drive north for a few months.
I would start by covering up all of that glass. Reflectex works great, I would also look into some good window tint if you don’t already have it.
For the money, these are looking pretty slick. I could see hanging one in one of those windows you have that are vertical closing. Bet they use very little electricity and ultra quiet, probably way quieter than rooftops.
Start by blocking all of the windows. Sun coming through that windshield and those side windows turn the coach into an oven. You can get fancy with shades, etc, or go desert old school and just put foil in the windows.
I used to live in California where it was 110 or more each day of the summer. A few bucks of foil saved us 100’s on our electric bills.
Oh yeah, Go Dodgers!
One way to help would be to clean the roof, and paint on a coat of Cool Seal. It’s a paint that is so white that it reflects almost all of the sun’s heat. It’s like adding insulation to the roof.
You may be able to run both ACs while running the generator.
Finding a shaded place to park will help a lot.
Do you have a/c units on the roof? How many and do they work? Our class a is 35’ which is about what yours appears to be. We have 2 duotherm units that work well, it stays nice and comfortable in Texas summertime temperatures so you should be able to at least get a comfortable temperature in yours once things work properly.
Honestly, without having a shade structure above it, there are very few effective ways to do it.
