Hi Silviax,
When was the last time that you took a FULL-LENGTH CAT (including the Essay and IR sections)? If you've taken one recently, then what were your scores (including the Quant and Verbal Scaled Scores)? If you have not taken one, then you should take one soon (maybe this weekend). The data from that CAT will help to define your current strengths and weaknesses and give us an idea of what you need to focus on going forward.
1) What is your goal score?
2) When do you plan to apply to Business School?
3) Which Schools are you planning to apply to?
The GMAT has gone through some changes since you last took it. You're now allowed to see your Unofficial Scores BEFORE deciding whether you want to keep the score or cancel and you only have to wait 16 days to retake the Test. The content, patterns, logic, Tactics, etc. are almost all the same as when you last studied, so it's still the same predictable Exam that it's always been (and you CAN train to score at a higher level).
GMAT assassins aren't born, they're made,
Rich