The 22E is a nice compact Class C. Easy to move like a car, when you just need to go.
Solar panels are very easy to install, it just depends how comfortable you are drilling holes into your new roof. The other issue is the amount of available real-estate on a Class-C roof. Unless you want to mount panels on the cab-over section, space is limited.
A few of the most efficient panels would provide enough power for virtually unlimited steady 12v DC camping. But not really enough panel space for a big "off-grid" 120v AC system with several 6V golf cart batteries and a large 2000Watt+ inverter.