Bankroll Requiremants

[Chykynlyps]

I have been playing hold'em for approx four years(I'm turning 23 in July). I'm going back to school in the fall and I would like to at least supplement my income with poker. I have been playing in a very small ($20 buy in)(however, profitable)) NL game at my friend's house. I was just wondering what kind of a bankroll I should be putting together before i go off to school. Obviously, there won't be very many huge games on a college campus. But at the same time, there may be professionally run poker rooms in the vicinity. I would like to stick to NL but I am not opposed to playing limit poker. If anyone could offer any insight I would greatly appreciate it. Just a small warning before you respond. I will more than likely have more questions. Thanks for your time.