Sounds like you know what to expect. In short, I think you're in range for the schools you listed. Only thing I'd change is to swap out Columbia for Berkeley (Haas) given your goals and interests. If you want to do venture capital and/or remain in the tech arena (and do it in the US), you're best off being in the Bay Area (Silicon Valley is to technology what Hollywood is to film/tv or what New York is to Wall Street/banking).
And VC really isn't 'finance' -- it's more about helping entrepreneurs build companies (i.e. understanding tech trends and having extensive networks with tech executives is far more important than knowledge of finance and financial markets).
Don't worry about your GMAT. You've got a PhD in quantum physics. The adcoms are sensible enough to recognize that your lower GMAT quant score is more a reflection of "poor test taking" and not "poor quant skills" - and what adcoms care about with the GMAT is an indication of your quant abilities, not your ability to take tests (the "standardized test" being an imperfect measure or proxy for it).
At this point, just focus on the applications - you're in range for those schools. There's no safeties, but you have a reasonable enough chance.
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