What should I do over the next 3-5 years to improve my chances of an M7 B-School Admit?

I'm in my final year of my undergrad at one of the Indian Institutes of Technology (Mechanical Engineering) My profile: GPA: 8.3/10 (not really sure how that scales into the US 4.0 GPA system) GRE 335/340

I'll be joining a tier 2 consulting firm in July this year.

Internship: Unilever (2 months): Supply Chain Management, Factory Engineering

Extra Curriculars: I've held a few positions of responsibility at college and school I am a Trinity college certified Pianist I'm a regular volunteer at an NGO that works with underprivileged women.

I have to be honest here, and say that I'm genuinely not sure what I really want to do in 5 years time. Ideally, I would really fall in love with the consulting field, work my way up and make partner in time. But, I consider joining a B-school as the ideal way to exit, in case I feel like I need to. I'm really confused and dont really know much about how all this works. I'd really appreciate any advice.