Holdem is easy.

[Snoopy76]

If your bankroll can afford it and you play a good game, why not move up? I do however understand your point. Moving up a stake is more a psychological challenge then a challenge in your game play. I would recommend continuing to build your bankroll above and beyond the consensus of what a bankroll should be (500X BB, for example). I have moved up a stake 3 times since I began playing for real money. Each time my bankroll was 1.5x to 2x what popular opinion says that your bankroll should be. It’s just the amount I need to feel comfortable playing. If you don't think you could handle losing money (even if you're bankroll can handle it) you shouldn't move up. In poker, if you are afraid to lose your money then you are sure to lose your money. Don't move up a stake until you are 100% comfortable with the swings it will bring.