Inverter issue, we need some power for dry camping

For the use you describe it is relatively low power demand. Twin 6volts, 250Watt solar, and a 300watt inverter should cover your needs

I have twin 6volts, 265watt solar and a 300watt PSW inverter. I can college football 3 night tailgate running multiple TVs, radio, and LED lights all I want. If it's cool enough to not need AirCond I don't have to run the generator at all. I run out of water and gray tank capacity well before power every becomes a problem doing this.