I roomed with a kid from my high school i knew. And I had two random suite mates. Now next year, I never want to see my roommate ever again, I try avoiding him at all costs, and my two suite mates are my suite mates again next year, along with one of their friends (who lived down the hall) being my roommate next year.
Good choice going random, you meet more people, and hey, if you don't like him, switch after a semester, or even a month. Just say to your person in charge that there is conflicting interests.