Hi simranmalhotra1239,
Thanks for writing in. I am having a bit of a hard time understanding your background, as your education is in engineering but it seems your work experience has been mostly sales/marketing. If that is the case, my question is what are you seeking to do with your MBA, and why are you seeking a second graduate degree?
Unfortunately I think you're aiming a bit high for your profile and encourage you to at least diversity your target schools to increase your chance of admission. I'd classify Wharton and Booth as "far reach" and the other two as "reach." A 660 is at the bottom of the 80th percentile for NYU, and just above it for Darden. This does not mean you can't apply, but it does mean you'll have to show a compelling reason why they should look past your GMAT score.
There might be something in that last year of experience you mention, as leading a team of 8 and opening a new center could lead to good essays, but you will really need to focus on what makes you an exceptional candidate in order to overcome your GMAT.
Good luck!
Daniel Richards
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