GMAT Strategy

I don't have endeavors such as going to a top business school such as Harvard or Wharton. In the recent months that I've been researching and studying I've just wanted to go to the University of Pittsburgh. I took the GMAT last January and scored well below my potential (420: 27 verbal, 20 Quantitative) and certainly well below what Pitt wants in a student. However, because my friends and family urged me to finish what I started, I applied with an embarrassingly low score.

I've never been good at standardized tests...ever. That doesn't mean I'm dumb, considering I scored a 5.5 on my AWA's without even trying. I feel relatively good about my strong personal statements, undergraduate and work experience, and my interview....so disregarding a bad test I applied anyway.

Pitt emailed me recently and stated that they want me to retake the GMAT and I've already accepted that challenge. On March 26th, I will try again.

Here's where the problem lies, which way should I go? I researched a number of different methods to take the GMAT but to be honest, MGMAT just didn't work for me despite having a number of excellent ratings. I thought about taking a Kaplan course (nothing against Kaplan, their teachers and employees were great and friendly) but I tried doing that with their LSAT class and the results were less than great (another sign I just don't test well). At this point I'm willing to try anything to get my score higher. Here's a list of the books that I have:

OG 12th edition
MGMAT geometry
MGMAT number properties
MGMAT equations, inequalities, & VICS
MGMAT Fractions, decimals, & percents
MGMAT Sentence correction
Princeton review: Crack the GMAT

If there are any tutors in the Pittsburgh area I'd love some help. Please someone point me in the right direction, I've gone over these books once before and if I have to go over them again I will.

Thank you in advance.