100 Watts Solar with Deep Cell 31s or Trojan 6 Volts

100 watts and 2GC's will do fine. With extended no-sun days you might be forced to use the generator.

I have 2-60watt panels flat mounted, they usually have the batteries fully charged well before the end of the day. I have a 100 watt portable panel, seldom need the portable (only in totally shaded sites where more on the roof wouldn't help anyway). I run my gen dry after servicing in the fall; it hasn't been run yet this season.

I'd use it as-is for a year before considering adding more panels.

Regards,
Doug