You have excellent academics and your professional background looks impressive. Apart from the schools you have short listed, you should also target good b-schools with high consultancy placement rate like: Duke, Cornell, McDonough, Darden, Tepper, Vanderbilt, Texas-Mays, Urbana-Champaign & Purdue-Krannert .The average GMAT Score for these B-Schools fall in between 570-760 range, you have good chances of being admitted for 2013 intake.
With 6 yrs. of work experience,which usually b-schools looks for,you are in perfect stage of your career. I would strongly suggest you to immediately start working on your essays & recommendations for these Business Schools. It would be prudent to seek aid from expertise consultants for direction on preparing application and get your essays & scholarship essays evaluated before sending it out along with your application. Please visit http://www.general-ed.com/MBA-essay-analysis
to know more about online Essay Evaluation
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