We find the single unit in our 2002 Classic 30 marginal when outside temp is above 85 or so, particularly in the daytime. The full awning package helps a lot. We travel with dogs and close the door between the split bath and the living area to keep them confined at night. The slot above the door, presumably to allow air flow to the rear, is too small to get sufficient cooling in the bedroom.
Thinking about a single 11,000 BTU unit in the bedroom. I'll put in the air handler with the separate thermostat and run the existing system as a single zone. Simplest approach is probably to run a separate power cord. The 50A cord is heavier and harder to stow.
"You cannot reason someone out of a position they have not been reasoned into"
Al, K5TAN and Missy, N4RGO
2002 Classic 30 Slideout
2001 Safari 25 RB Twin (Gone, but not forgotten)
2013 Dodge 2500 Laramie 4x4 Megacab Cummins
WBCCI 1322, TAC FL-39, AIR 82265