Hi Lisa,
Thanks for writing in. Given what seems to be a strong academic and work background, I would not recommend retaking the GMAT and applying to these schools for R2. I just don't think there's enough to prep for the test again (at the level needed to get a 730+), and put together 3 solid applications. A 710 should be enough to get these schools to continue looking at the substance of your application, beyond the test score.
Best of luck,
Daniel Richards
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