if you have worked hard to get your bankroll to where it is and think that you game has holes then dont move up until you feel you are overrolled and can take the hit of bad play - just not being good enough to move up yet or tilt w/e.

however, if you want the challenge then take some shots but prepared to call it a day if you arent playing winning poker/adapting.

With a small br and a new player id edge on the side of caution until you are happy enough (as you can be at the micro's) to move up and shot take.