What are my chances? Help is greatly appreciated!

Hello CC community, I just want to know my chances on being accepted into the Boston University School of Management.
My High School GPA is around a 3.5 and my SAT score is a 2050. I did the SAT Subject Test once months ago and got a 770 on Math Level 1 and a 550 in World History (I never took world history in my life). I plan on repeating the subject test one more time in January in two other subjects and ace them both.
From what my teachers and friends say, my College Essay and Writing Supplements are considered very very good.
I also have many extra curriculars (like a TON) including School Newspaper Editor-in-Chief and layout editor, Class president four years in a row, a 2 week internship in London at a firm, a 3 week summer business course at UCLA, an MUN conference in China and much more. What are my chances?
Comments are greatly appreciated everyone!

Bump!