To retake or not...?

Hello,

I recently decided to apply for business school instead of graduate school, and I'm stuck in a dilemma here with my GMAT score. I took the GMAT last week after 2 weeks of studying (with 80% of the efforts going into Verbal) and got a 750 (98%ile) with a 47/47 split right now the middle. However, the 47Q only got me a 70%ile. I'm only applying to Harvard, Stanford, and Wharton-Lauder (MBA/MA), and due to certain circumstances I must apply in round 1. Having said that, the latest I can retake is probably the last week of August, which gives me about 3 weeks to focus my efforts on Quant if I decide to retake. I'll only be using online resources and 5 practice exams that I haven't done yet.

Here's some other information that some might find useful to consider:
- 3.81 GPA from Stony Brook University, double-major in Biochemistry, Psychology, minor in Philosophy. Unfortunately, practically no math classes since I was placed out with AP scores.
- 3 years work experience, but none that involved doing things with numbers.

My biggest concern stems from reading that Wharton wants to see quantitative abilities from either undergrad coursework, GMAT, or work experience, and right now I have none of the three. I'm not sure if Harvard and Stanford pay equal attention to this, but I'd prefer to err on the side of caution.

Any advice would be much appreciated. Thanks!