Li batteries do not wish to be topped off, nor trickle charged. More solar (400 to 600 watts) and a charge controller designed for Li would be my choice.
Victron has a 2000 watt inverter that is cheaper and better than the Xantrex. The biggest difference is, that after warranty runs out, the Victron can be repaired. Xantrex won't sell the parts.
I suggest staying with one "family" for components--so go Victron for the solar charge controller, too!
600 watts may obviate the need for a generator, except for running the roof air.
Battleborn has some "packages". I suggest following their recommendations.
