LeBout, its going to depend on how you plan to use the rv.
Longer term stays, you will need a larger rv with more storage space for all your stuff, larger water and holding tanks and comforts like a sofa with a tv that's mounted in a place where you can actually view it without acrobatic circus training.
It would then pay to have a floorplan with an island bed opposed to a corner bed so its easier for you to move about.
Short term overnight stays can be done in a smaller rv. If my intended use was simply back n forth as a transportation vehicle with an overnight stay or two, I would choose a class B, like a Winnie 'Travato 59k' which gets better fuel mileage than a C and has comfortable twin beds (with a possible king insert option) plus a good size bath/shower.
Once you get to your destination, you will need to determine if you need to stay in the rv or stay in your parents house. Again, the size of rv will come into play. Do you have room to park it ?
If you choose a larger multi-purpose rv , you might need to consider towing a car, only you can determine if you need to do that or not. Its an expense to set up a car to tow.