ISB can be a good option since you've been working at a startup. You'll need to have an answer as to what are you looking for post MBA. Ideally your startup experience should take you places.

My profile is not the best in terms of grades (not bad either but 90% in 10th and 12th and 7 CGPA in college- BA Hons)  
 Will ISB admit be possible given I crack a great GMAT score? I’m unsure if the Acads will hamper it.

Recruiter

How important is it to get an MBA for an overall network and growth perspective?
I have an experience of 3 years at a series A startup, I now feel my growth

How important is it to get an MBA for an overall network and growth perspective?
I have an experience of 3 years at a series A startup, I now feel my growth flatlining.
Would it be better if I go for an MBA or if I go to a different startup?

MBA for startups/jobs