Decide what you wish to power via solar.
Do an energy audit.
Then come back with those figures and lots of folks here will help you spend your money.
Regards, Don
My ride is a 28 foot Class C, 256 watts solar, 556 amp-hours of Telcom jars, 3000 watt Magnum hybrid inverter, Sola Basic Autoformer, Microair Easy Start.