Suggest you narrow down what you want to do first.
# of residents on most trips
Duration of most trips. ( 3 days, weeks, months)
Conditions of most trips. (resort campgrounds, state and nat parks, boondocking in middle of nowhere)
Your trips will not always fall within the same parameters, but you want to ensure you have the most frequent ones covered.
My reason for the questions is because we dont know how large your water and wast tanks need to be, how many beds, Or where your going. All can change how you may want to get there.