Don't go over your head to clear a bonus. A bonus is just a little more rakeback than usual. And if you play good, that should only be a fraction of your winrate. Concentrate on playing good poker, not on playing a huge volume.
At least until you reach stakes where the money becomes substantial, the only thing that should matter is enjoying the game, learning and improving. If you do that, the money will come naturally. If you focus on bonuses instead, you will just slow down or completely stop your progression as a poker player.