We always found a car to be a good idea for Move-In. If you fly-in you’ll still have regular luggage plus dorm stuff and will need to stop to purchase or pick up more stuff throughout the weekend. If you show up first thing on Move-In Day then parking is usually not a problem. Even during that busy weekend I managed to find a place to park - including right in front of the bookstore at one point (was sorry to give that one up). We’ve found that most cars - including the smaller Elantras and equivalent - fit the extra stuff just fine, but there’s usually been just two of us. If three or four, then upscale to a larger sedan or minivan (whichever is cheaper).
If you arrange for the rental six months before Move In you’ll get a find price. We are members of Costco so use that option and I ususlly get a decent price.
You can do the math using Uber estimate and google maps to see if a rental makes sense over Ubering - keep in mind that some Ubers X won’t take huge amounts of stuff so you might have to trade up to an XL. Hopefully that wouldn’t happen at the airport but you never know! My older daughter ran into this problem when she was moving out of her dorm in NYC so thought I’d mention it as a small risk.