If you will be keeping it in one place through your college years, you would likely be better off with a trailer. Motorhomes are complex and expensive to maintain. Older ones generally need a lot of maintenance to get them roadworthy and keep them that way. Brakes $2,000, Tires $1,800, Shocks $200, Roof recoat $1500, Batteries $400, Annual taxes and registration $450 (depends on location), Insurance $600, Annual site rental $3,000. These figures are pulled out of the air. Your costs will vary, but you can see that they would add up fast.
There certainly are good deals to be had in older motorhomes, if you shop carefully, However, you need time, know-how (which you can acquire) and deep pockets to restore and maintain them.
Good luck, with whatever you decide.
Our "Cottage on Wheels" is a
1998 Southwind 32V on GM Chassis