This year I almost filled up my entire minivan + car top carrier, with the backseats down and one middle row seat removed. Included were two large suitcases of clothes, probably 15 pairs of shoes in boxes, a number of hanging clothes in a bag, a hamper, bathroom supplies, kitchen supplies, a TV, school supplies, a minifridge, my bed set & pillows, a handful of books and posters for my room, and that largely being it. However, this included ALL my clothes, summer fall winter (seasons change quickly in Boston), interview outfits (my school is very preprofessional and there are a lot of business events), and of course medium boxes of kitchen and bathroom supplies that wouldn’t be necessary in a freshman dorm. If it doesn’t fit in a minivan, you have too much, but otherwise imo it’s better to bring up what you can and take back what doesn’t fit.