Sealed the deal on a new camper and I have to make a long drive to pick it up t the beginning of the month.

The plan is to use it for 2-3 days at a time at most in the summers whenever we can get away and then I'll use it for hunting as well.
Has 2 20lb propane tanks and a single 12v battery. Option for a second battery which I will probably go for.
For backup. Would like to have either a generator like a Honda eu1000i or 2000i or a solar charging system for the batteries.

What do you guys recommend and what are the cost differences.