Why not get started with panels "on the ground". Several manufacturers offer "solar suitcases" which are cheap, portable and a way to get your feet wet... or sunburned... or whatever you do with solar.
We carry 2 X 100 watt Renogy panels with the Renogy Wanderer controller. I also carry 2 Honda 2000s with propane conversions. The Renogy setup connects directly to our battery bank with Anderson Power 12 volt
disconnects so setup is a 2 minute, secure and foolproof (or the higher standard, GammaDog proof) event.
On the trip we are on now we've used solar when dry camping with good weather (Navajo National Monument and Arches NP) and generators when needed (Grand Canyon North Rim and Bryce Canyon NP).
I love the flexibility this gives us, plus I can have the trailer in the shade and the panels in the sun and even move them as the light changes through the day.