What you have to understand is that if you plan to use solar as your main power source you need to put most of your appliances on propane. You will either heat with a woodstove or a propane gas heater and you can forget AC.
If the grid goes down you need to be concerned with your well pump, energy efficient freezer, lights, washer, vacumn cleaner, coffee pots, power tools etc.
For our personal purposes we are installing off gird solar because we believe at some point the grid is either going down or we will see energy rationing or in case of probably coming civil unrest the govt will cut off power to belligerent areas. If you don’t think either of these things will ever happen then you don’t need to be looking into solar. Its expensive to set up. You may never get ROI.
10KW per day will do us just fine. $3500 is a good price. That will put us at under $15,000 for a whole solar system.
If civil upheaval is about to be profound, you won’t be able to ship spare parts for all that stuff and it will be paperweights.
This is spending money for a scenario in which it cannot work.