Started playing real money when should I move up?

First a little background:

I began playing poker tournament style like on TV. 7-8 of my buddys go to someones house and we'd play a winner take all tournament. I played these over my summer break and made some money. I got poker stars and did play money almost every day this semester at school. I played sngs and ring games and I had over 100,000 play chips.

I read Theory of Poker and Hold em Poker for Advanced Players to get more educated on the game.

So at the start of winter break my friend transferred $30 to my account at Poker Stars. I've been playing the $0.01/0.02 blinds and my bank roll is at $90 now after a week. I can play 4 tables with no problems and that keeps my starting hand requirements disciplined.

So my question is when shoudl I move up to the $0.05/0.10 blinds then to the $0.10/0.25 blinds?

just have 300BB at whatever limit you're playing at

300 BB

Invest in your hobby and move up to .5/1.