690 retake question

Hello,

Thank you for reading and any input would be greatly appreciated.

I took the GMAT for the first time yesterday (2/13/2016) and scored 690. The overall score was about what I had expected. I used Manhattan GMAT practice tests and books and the GMATPrep practice tests. My scores on completed exams (where I did complete exams)

Manhattan #4 - 680, Q45 V37 (2/6/2016)
Manhattan #6 - 690, Q44 V39 (2/9/2016)
GMATPrep #1 - 700 Q47 V39 (1/30/2016)
GMATPrep #2 - 690 Q47 V38 (2/6/2016)
Actual GMAT - 690 Q42 V41 (2/13/2016)
*there is some upward bias here on the quant section. I cut short a couple MGMAT practice tests after struggling through quant (high 30s)

As stated, I was not very surprised with the overall score. I was surprised, however, with the breakdown on the actual exam. I felt quite comfortable with the quant section. I expected to score in ~70th percentile - I got 50th. I botched the timing on the verbal a bit and rushed through a RC set and ended the exam with ~3-4 minutes left. I still felt comfortable with how I did, but I expected a moderate drop-off relative to my practice tests. I was totally wrong on both, which I find a tad funny.

Since I spent the vast majority of my study time on quant, it is funny that I showed really no improvement. Clearly, my approach was flawed. I spent little to no time on verbal (just practice problems in the official book and practice tests), and improved moderately. I would chalk this up to luck. If I retake, I doubt I'll get 94th percentile in verbal.

As for test prep, I went through all of the GMAT quant books and end of chapter problems. I made study guides on each book (~15 pages total), highlighting areas I struggled with. I reviewed this study guide a few times. I went through the official guide for GMAT quant and verbal review books (2016 versions). I made a list of the quant questions I missed, and reviewed them. I started studying in early December. For December and the first half of January, I studied ~3-4 hours during the week and ~5-8 hours during the weekend. For the second half of January and up to the exam, I studied >5 hours during the week and ~8 hours on weekends.

As a little more background, there are a few schools I would love to attend. These include NYU (median - 720, 80% range - 680-760), Columbia (715, 680-760), UCLA (714, 680-750), USC (690, 620-730), and Univ of Michigan (710, 660-760). Of these five, NYU and Columbia would be tops. I went to Hofstra, majoring in finance and accounting. I had a 3.8 GPA. I've passed all three levels of the CFA exam. I'm hoping that these factors offset my low quant score (at least somewhat). I also think that my work experience will be additive - I've been promoted twice since starting work a five years ago.

So, the question is - in your humble opinions, should I retake and try to boost my overall score? I was thinking of purchasing the Economist's study package, focusing almost entirely on quant. If I do retake, I will have to spend some time figuring out how my approach was flawed and plan out a new one (any suggestions here would be helpful).

Once again, thanks for reading, and any help would be much appreciated.