Hi twinkleeyes,
The process of applying to (and ultimately attending) Business School will require a big investment of time, money and energy on your part, so you really should make sure that the Programs that you apply to match your career goals/needs. There are a variety of factors that go into selecting the Schools that you'll apply to. Instead of just applying to Programs in which you might have a good chance to 'get in', here are some other things to think about:
1) Is there a particular company that you want to work for or industry that you want to work in? Certain degrees are more appropriate than others if you have a specific career goal.
2) What do you want your MBA to do for you?
3) Do you want to go to School full-time or part-time?
4) Are you willing to relocate? Are you comfortable with working through a program that is primarily online?
5) Are you going to be applying for scholarships?
Etc.
It's okay if you don't have answers to any of these questions just yet, but you really should try to define all of the important variables in terms of your goals, so that you can tailor your entire approach to getting into the best School that matches what you're looking for.
The GMAT is a consistent, predictable Exam, so you CAN train to score at a higher level. If your current 'math skills' are not great, then that does not necessarily mean that you cannot improve them. It's possible that your studies so far have been inefficient - and it's likely that there are ways for you to improve that you have not considered yet.
If you decide to retake the Official GMAT, then it would help if you could provide a bit more information on how you've been studying and your goals:
1) How long have you studied?
2) What study materials have you used so far?
3) How have you scored on EACH of your CATs/mocks (including the Quant and Verbal Scaled Scores for EACH)?
4) What was your Goal Score when you started studying?
GMAT assassins aren't born, they're made,
Rich