Just a data point for the OP.
We are in Mesa AZ. It is 88F at 2PM and sunny. We are in full sun, with all the awnings (rear, utility side, patio side) awnings fully deployed.
Our 27' FC FB has 50A service, however our second AC is not working (separate issue).
Our main AC is working continuously, and the temp in the coach is 79 in the back and 81 in the front.
2016 30' Flying Cloud / 2016 Ram 2500 Diesel 4x4
“Character is doing the right thing when nobody’s looking. There are too many people who think that the only thing that’s right is to get by, and the only thing that’s wrong is to get caught.” - J.C. Watts Jr.