Rotman or wait for an year ? Please help .. urgent !

Hi Experts,

I'm looking for your advice on whether I should take Rotman's offer or wait for an year betting on a top 15 ranked U.Sschool.

Background:
Career: Indian IT Consultant, 8 years experience
Age: 30 Years
GMAT: 710
Under-graduation: Engineering Degree with not so impressive GPA
Domain: Technology Consultant
Writing & Interview skills: Very effective
Interest: MBA General Management/Marketing
Ambition: Marketing for technology products

As everyone is aware that Rotman is known for
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