Undergrad - Engineering from an average college in India
MBA from one of the IIMs (0 pre-MBA work experience)

Age: 30 (when I apply next year)

Work Experience:

4 Years in Sales and Marketing with a tech MNC
2.5 years of entrepreneurship experience in the Training and Media sector

GMAT - 740
GPA - ~ 3.6 in UG and ~ 3.4 in PG (converted and not normalized) - My score * Topper's Score / 4. Crude, yes.

Strong Extra-curricular activities and leadership roles.

I wish to learn, network and grow more into the Marketing/Big Data areas and right now will salivate at a PE role within the Tech sector.
I realize the need to build a good, logical and convincing story, which I *think* I possess/ My story isn't about 'I got bored with X. Therefore, I need to do Y'

I believe that I can write very good essays.
I can get good (!) letter of recommendations from people who have worked with me and people whom I have reported to.

Queries:
1. Is a honest story like this convincing enough?
2. I am looking at the Top Schools but the question is whether they will be interested in someone with a profile like mine?
3. I know which ones strictly knock second MBA aspirants out of the park (Haas, Tuck, Duke, Cornell, UCLA..) Any suggestions on schools to focus?

If you have any other observations / impressions / suggestions that will help me consider / reconsider / mull over, it will be very helpful!

Thanks for all the good work!ac