Ouch...75 gallon for a dorm room? --- hope you plan on staying there a while. At least thru grad school to make it worth while. These tanks are not easy to move and must be attended to 24/7 year around.
Guess there goes your spring/winter/summer breaks also.
A reef tank takes a good deal of care, maintenance, and responsibility.
Just be sure you know what you are getting into.
Keep us posted on how all goes...
"Om" 
"Reef on"