Hello abhinav, thanks for your question.
I think your 700 GMAT score opens the door at every program you list, but it is your leadership experience that will get you into any program.
Your competitiveness will come down to the quality of your work experience. Can you draw upon “moments” when you truly led: influenced individuals and organizations, drove results, took initiative? If you can get that into your essays, you will be competitive.
In terms of extracurricular activities, what you’ve done more recently has more weight than what you did in university/school. I’d play up your work teaching children at the NGO in your essays.
I think spending some time to go through the rankings (e.g., US News & World Report, Business Week) will help you in categorizing your target programs.
Best of luck!
mbaMission Insiders Guides: http://www.mbamission.com/guides.php?category=insiders
Free Consultation: http://www.mbamission.com/consult.php