Hi West to East,
Thanks for writing. Overall with the details you provided I see the potential for a strong application -- as you have good data to share on academics, career progress and extracurricular involvement.
As to your questions,
1) I don't think your GMAT breakdown warrants a retake. You have a Finance background and strong transcript, so there are other ways to prove your Quant background besides the GMAT score. You're likely better off investing that time in your essays.
2) I would rate you as competitive for all schools you listed. HBS and Wharton will likely be a bit of a reach, but Columbia could be a good target program for you given its competitiveness and real estate focus.
Best of luck,
Daniel Richards
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