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Hi,
I just took GMAT 660 (Q50, V31).
My background : 3 years Software development work experience in Cisco R&D India.
Undergrad: National Institute of Technology Surathkal (Top 10 Tech schools in India)
CG: 7.6/10 (don't know how to convert into 4.0, think conversion is around 3.2-3.4 not sure)

Started my own venture in college and ran it for a year. A Small Internet collaborative magazine
Interned at a Internet startup in managerial and marketing roles for 2 years(worked part time) during college (does it count?)

Extra curricular:
In charge of CSR activities in our company.Speaking to NGOs and making all employees to participate in the activities.
I maintain a Stock picks on fundamental analysis in a website.

What top schools I can apply with this score. Is it possible to get universities like UVa, cornell, kellog or atleast NUS or 2 tier like Kelly or Mays ?
I don't think I will be able to take GMAT again.I will be busy with work next two months

Please evaluate my profile and make suggestions.

Thanks in advance.