The Cool Cat Heat Pump in the Texas summer will easily result in way over 100 degree temperatures!
Or if you mean the a/c? It will not keep a 210 cool unless the windows are covered, no sun. And the Cool Cat will not cool down a already hot 210, well maybe over a long period of time. The Express Van a/c will also be needed to cool the 210. The Express Van a/c is noticeably stronger than the Cool Cat.
But if the windows are out of the sun or covered, the 210 will stay cool.
I and others use Reflectix. My 190P at home has Reflextix in the windows at all times with the back windows and Fantastic Fan open some which prevents condensation.
Bud