Hello there good sir,
I don't want to be the bearer of bad news, but from what I see here and with the GMAT score you currently have, those schools are most likely out of your range. Maybe NUS, if your work experience in strong (but I don't yet know enough about this - what you do, how long you have worked, how many promotions you have, and whether you lead people). If you can bring your GMAT above 700, this may change things for you.
Good luck on your retake!!!
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