If you don't intend to do extended stays without hookups on a regular basis, Solar isn't worth it in my opinion. You're going to need a generator anyway due to the unreliable nature of Solar. I currently have 600 watts of panels on the roof, and this weekend for instance, Friday and Saturday were heavy rain, with a low heavy cloud cover. We also had the grandson with us, so the TV was in use a lot more than usual, and we kept the furnace at a quite comfortable setting during the day, and the rain turned to snow Saturday night so the furnace ran quite a bit at night, especially since I kept the thermostat higher than normal since the grandson was in his "spiderman Sleeping bag" and he got cold. My solar panels didn't put much back into the batteries, and without the generator we wouldn't have been able to keep the furnace and my bipap running three days, let alone the entertainment devices. That said, the wife and I alone do a good job of holing up in bad weather with just a book.
Regarding your big generator, you might want to look into a smaller inverter type if you don't need the AC.
