I just got our power bill and we used 271 KW last month.
If you want to do off grid solar you need to put a lot of stuff on propane anyway. 7KW would run our place in the mountains no problem. Plus you have to remember that with solar panels they are charging all day long. So you run your washer, vacummn cleaner, etc during the middle of the day and you are not running AC or heat off a solar system. You need a woodstove and ceiling fans.
Your fridge is the 2nd biggest power eater. 24/7. First is Air Con, summer only but so much in summer that it overwhelms the rest of the year. And your furnace has a big blower on it.
Last month in Georgia was not a good sample. Sample it in July.