Indian Male 680 , IT Project Management - Evaluate ?

Hi

I want to do my mba in general management and my profile is :

Indian Male 680 score in gmat .
Work : IT Project Analyst in Project Management Office team . I am a PMI PMP Certified professional . Earlier worked as an IT Sr. System Analyst .
College : Engineering in Electronics & Communication , 61 % , average college in India .
Extra Curricular : Student Coordinator of College Fest . won a few competitions in college (quizzes etc) .

Please let me know my chances for the below colleges and do add any other college you think i should apply to :
Kellogg , Haas , Duke , Tepper , Rotman .

Also should I reappear for Gmat and risk my essays or apply with the score of 680?

Thanks
Kshitij