We have taken our ElkRidge skiing as well. Stayed in Durango and Breckenridge. Getting there is half the battle, don't want to travel on dicey roads.
We added heat pad to fresh tank and pipe heaters to our longest run to the kitchen, after we had some freezing issues on one trip. After these mods, we haven't had problems. We run off fresh tank, filled every few days during the warmest part of the day.
Like others mentioned, run furnace to keep underbelly warm, your fireplace or other small heaters help inside.
Haven't decided this years trip but looking at Durango, AngelFire or Taos.