Couple of thoughts... I suggested a mini-split which would draw significantly less than 21 amps or 1000 watts. From what I am reading a 12K mini-split pulls about 4 amps at maximum draw and throttles down substantially from there. I've seen plenty of Youtube videos of people running mini-splits off 8 panel solar systems with larger battery banks. Its doable, likely for about the cost of a typical onboard generator.
I simply don't want to pay those prices to make it silent, so I'm leaning back towards a $1200 Honda 2200 for the occasional dispersed camping.
But, it is absolutely possible with a reasonable solar array and not nearly as expensive as your model.
