Don't do it unless you guys are a full out team. My brother and his friend are having the same dilemma, and i could see it working for them cause they would be in suite style rooms, and literally are like the ultimate bromance. I think the thing you should watch out for the most (because its not likely that you would somehow get a roommate that doesn't get annoying at all) is whether or not you want to get away from your original roots and the town and people you (I'm presuming) are leaving, or if you would be okay with keeping that kind of connection.
Personally, I wouldn't do it cause I am so amped to get out of my town and have a fresh start, but that all depends right?