Solar power in the RV world is about charging the 12V batteries and offering some power, during the day, to run 12V devices. Your 12V system will also power 120V devices if you invert the DC current.
There are a number of threads about solar on this Forum. Dan Meyer has good info on his site. Pianotuna's article on solar use is also good. Handybob is entertainment although the few interspersed tips are good.
I have solar charging and would offer this suggestion: Install more panel wattage than what you think is necessary. Panels are still cheap and an extra one or two will fill that future hole when you dig up more ideas about how to use free power.
Good luck with solar!