Its not a bad idea to live in the dorms for 1 year, then get to know the fraternities through informal rush activities, then take as much time as you want before a decision. Also, maybe the dorms will be less distracting? with fewer activities....depends where you live, so you can get your academics lined up the first year.
Its best to meet as many of the guys as you can during several functions.
Formal rush, 1 week, seemed too fast to make a good decision. Summer or semester rush would be better.
In the end, if you are elected into the leadership of the fraternity, the experience is like running a small business - budget, maintenance, finance/funding, planning, meetings, committees, public relations, etc....good career building, resume experience.