You have a strong GMAT score. Unless you believe you can improve your score by 40+ points, I recommend focusing your time on your personal essays and letters of recommendation. This is where you can differentiate your application from your peers.
Admissions teams are going to be looking for leadership experience, and this should be emphasized throughout your application.
I believe this case study, of an engineer who was accepted in Columbia, Tuck, and MIT, will be of help to you:http://www.stacyblackman.com/comprehens ... ies/case2/
Conrad and the Stacy Blackman
Interested in a free 30 minute consultation with the Stacy Blackman Team? Sign up here: http://stacyblackman.com/contact
Stacy Blackman | Stacy Blackman Consulting Inc | http://www.StacyBlackman.com | +1 323.934.3936
MBA blogger, US News and Author, The MBA Application Roadmap