Thanks Xringer,
The unit will be used mostly for cooling in the summer and possibly as a backup for solar heat with radiant floors in the winter. I'm leaning more toward radiant propane heat in the winter. It depends on the price difference between the with and without heat mini splits. Here's a link to the propane heaters.
MHVFR20LPBT - 20,000 BTU Propane powered radiant vent free heater
Over 90% of the windows will be facing south with a 5.5 foot overhang to keep the heat from coming through the windows in the summer. Both winter ice and summer heat can be brutal here.