Your plans didn't mention an inverter so you can live better than a tent camper :) With more time off grid, that matters.
The 2800VA generator can run a 100 amp charger or a 150 amp PF corrected charger, such as found in some bigger inverter/chargers.
With the four batteries you can run a 2000w inverter to power the microwave, toaster, etc outside of generator hours, then recharge the batts when gen is allowed. Very important for breakfast toast before gen hours!!!! :)
Options are separate 2000w inverter and 100 amp charger or a combo inverter/charger. Lots of brands to choose from.
Installation/location of these units depends on the rig's floorplan etc, to get them as close to the batteries as possible. The converter now in the rig just stays as is. No need to disconnect it.