I stayed in Texas for over 7 weeks last Sept/Oct. We were in a Grande Design Imagine . One AC unit would never shut off the entire day. I think it might be a challenge but who knows?
it is possible, but once again I am not in the trailer during the day, and I would have the AC shut off and only the maxxair fans running, that is what I did this past summer prior to living in the trailer, it was parked in a relative's yard and I was setting up the solar and ecoflow units and testing them prior to moving in, July/August/Sept in Southern California, maxxair (times 3) on low all day kept the trailer at 82° the majority of the day, even when outside temps were >90°
I have a yolink alarm and water sensor system on the trailer that included a thermometer. so I use the app to see the internal temps, and it notifies me if there is water leaking any place I have the water sensors set, I have several around the trailer, under the kitchen and bath sinks, at the entry point where the water lines come in, behind the toilet, etc.
trailer is parked in the shade, solar is portable and set out in the sun all day and the exhaust fans are running with vents open circulating the air, bathroom on intake and living room and bedroom on exhaust.
time will tell, but I think I will be ok.
based on things that have occurred in the past 2 weeks, I might be back into a home by summer as well, here is hoping.