Good luck in your search for your own ideal place. Out of curiosity, why do you list yourselves as Expats in Mexico, when you say that you aren't moving here for two years or so? An Expat in Mexico already lives here, I would venture. There are precious few full-time gringos in any high mountain town that I have ever heard of in Mexico, unless you call San Miguel de Allende "high mountain." Patzquaro, too, has a few gringos now, and it can get downright cold in the winter. Especially since most rentals will not have any form of heat. AC for a few weeks a year in Chapala would cost a lot less than firewood in the mountains.
¡Que les vayan bien!