it’s hard to know exactly what you mean by running your ‘whole camper’, but I suppose since it’s a 30amp coach, with a 30amp shore power cord, only up to 30amps would be needed, as far as maximum operational output for the generator.
I would suggest that 30amps equates to about a 3,600 watt generator, or slightly higher, with a 30amp RV outlet(for sure!)...
that could be a single ‘large’ generator, or a dual setup, like the Honda EU2000i and companion, small and light, hooked up in parallel when you need ‘all’ 30 amps.
'14 Thor Palazzo 33.3 compact diesel
KingTailgater2 Dish, 100w/5amps roof SOLAR, BlueOx, 100,000+mi since '14... US, Alaska, and Canada... from GA, then NC, now N AL : )