heres a good example i remember reading about in our school newspaper a couple years ago...
couple kids caught some kind of catfish/bass at the local river. they set up a 55g tank in the common area of their suite. it didnt have any light on it, and just a HOB filter, heater, and another power head.
in the handbook, there is a rule that said you cant have anything over 15g in your DORM. said nothing about common areas in suites. they came down on the kids suddenly after it was already set up for 6months. totally out of the blue. said it was too much, and was at risk of causing a flood that would be costly to repair...
they accepted it, and drained the tank to a level of a couple inches, what would be around 15g, and made it into a terrerium with frogs/newts, weird stuff like that.
couple weeks later, the bosses of the RA's (not students), said they couldn't have it because fish tanks draw too much power, and are costly on utilities. so they cut the light off, and only had running the heater and a powerhead. but that still wasn't good enough. they eventually were threatened with judicial referrals and broke down the tank. even though there were no written rules anywhere about what they did...
basically, the lesson learned here was that you need to make your set up as low profile as possible, so that it wont attract attention.
i think your best option, would be to keep your 75g set up at home, hopefully train your parents to look after it for a year. in the mean time, set up a nanocube/aquapod or something in your dorm room. then, after a year of living in the dorms, most universities allow their students to move off campus. once you move off campus the next year, take your 75g to your apartment with all your fancy equipment and such.
this is what i've seen *most* people do, b/c they dont want to completely tear down their big tank at home, and they dont want to risk a medium tank crashing in a dorm room, or being forced to take it down.
but of course it really depends on the rules/regulations set forth by the university and the RA's.