Beat The GMAT a GMAT & MBA community

Hi,
details of my profile:

ACADEMIC:
• Canadian Male - B.A in Mathematics from a US school - undergrad GPA of 2.7 (3.4 w/in major) - with a score of 710(49 Quant,37 Verbal)in GMAT

PROFESSIONAL:
• After working for 6 years at a small investment firm, I moved back home to help sort out some family business and have been consulting since.
• Started at the investment firm as a broker trainee and moved up the ranks to run the hiring and training programs within 2 years. Helped grow the firm from 15 people to more than 50 and grew revenues over 900% in a 36 month period. Was asked to move to Colorado, from NYC, to run various aspects of a new branch. By the time I left, I was a principle of the firm and head of research and sales.

EXTRA-CURRICULAR:
• Volunteer coach for minor hockey organizations
• Volunteer work with Big Brothers and Big Sisters
• 4 year varsity ice hockey goaltender

I am very interested in going to a top B-school but am worried about my undergrad GPA. I have been looking at the following schools closely:

International
1)Cambridge Judge
2)Oxford Said
3)IE
4)Iese

US
1)Duke
2)MIT Sloan
3)Stanford
4)Yale

Please suggest what schools I have got chances? Have I got chance in top schools?
Thanks.