We are looking to build in the Ashville NC area 21-2200 ft above sea level. Mild winters. The view of this lot is to the south. Does it make sense to have your great room window view wall facing south in the southern states? We will be looking into the winter sun 3-4 months a year. We can build the roof overhangs longer from the house to assist. Looking for opinions, articles or publications that address this. Gets confusing googling everything. Also nat gas is available could go geothermal but very expensive what is the next best way to go. Heat pump combined with gas heat? Thanks greatly.