Hi,
You have a decent profile and a very good GMAT Score. As per your profile and area of interest I would suggest you to target Columbia, Chicago Booth, Cornell University and Yale University.
The Business Schools you have chosen are excellent but I will suggest you to apply few more which I have suggested above as they have good acceptance rate and employment record. Also get in touch with the alumnus of B-School which you are targeting to know more about the B-School admission procedure.
You would need to cleverly prepare yourself for questions like the reasons you want to switch from IT to management, your rationale behind applying for a specific B school, so on and so forth.
The next step for you is to focus more on your application essays and recommendations for these Business Schools.
Please visit
https://tinyurl.com/cnpsl4a to see more about online Essay Evaluation and Interview Preparation. If you are happen to based in Bangalore you can also attend the workshop organized by the alumnus of top business school and ISB admission team on 27th October 2013. You can register for the workshop here
https://tinyurl.com/cjy62uhFeel free to post any other query or concern that you might have.
Cheers!!
Neha Singh