i think LZ has a good profile and very interesting background/experiences that can be used in essays. Go for NYU, UCLA and USC! i really think you have a great shot!
Your profile is one of a kind. Would love to hear more about your frontstage stories. My suggestion would be: 1, retake GMAT, set 700+ as the goal. 2, find the perfect thread for your dazzling experience/unique career goal and make it more cohesive.
Personally I think it would be quite a pity if you couldn't make it to NYU or USC.
Really appreciate every piece of suggestion LSs provided. Actually I never think I can have a shot to get-in NYU / UCLA. Though I already took AT exam for 4 times, I will take exam-retake seriously.