To heat use the Sun itself, to cool store and insulate. Electricity is the worst way to heat. To heat something must be burned, the sun is burning use the light to heat a black floor or water. Big windows are always nice.
If I could AFFORD it I would go with all solar electric, why?
Its reliable - everyday the sun comes up. To make it PRODUCTIVLY reliable you need 4 or 5 or six times to retrieve the light reflected from clouds as on a sunny day.
Simplicity of use - pretty much plug and play.
Low maintainance.
Long lasting.
I would suggest:
Begining a solar system and adding pannels when its affordable.
Some solar pannels are always useful.
If there is open regular wind or hundreds of gallons of falling water use that.
Eually important is to work from the other end and overhaul all your concepts of how much energy you actually need while also utting corners though effiecncy like relective insulation on windows and other improvements such that cooking or simply standing near something warmer will be the only extra heat or cool you need etc. 1 nice quilt could save 100.00s of dollars,(dont you just hate that hot dry air that makes you all stuffy anyway). It could be almost ice cold all night and timed to heat the rooms you use in the morning (ie. not all the rooms in the house) and so forth.
There is a big difference between the cost of the actual silicon crystal cells and the manufactured pannels. It is possible to double maybe triple the square footage if you make the panels. There may be an exception to this somewhere.