5 year plan

Hi Everyone!

It's my first post on this website. First of all, I would like to say that you guys have done an amazing job with this website! It is extremely helpful! Good job guys! Recently, I decided that I would like to do an MBA from a top 15 school at some point in my life. Therefore, I would really appreciate it if you guys can give me some advice on doing well in the GMAT. Thanks in advance!

Background:
Nationality: Canadian/Pakistani
Age: 20 - will turn 21 right before graduation
Current Status: Student - B'Com June 2012 Rotman Commerce, University of Toronto
Expected GPA upon graduation: 3.4 - Graduating with Distinction (anything above 3.2 at U of T is distinction - just mentioning it because I don't know how relevant it will be)
Work: Auditor - Will be working towards a CA designation at one of the Big 4 accounting firms in Toronto starting Sept 2012.
Additional Info: I am thinking about sitting for the CFA exams as well. 1st Exam is in June, I have nothing better to do as I start work in September, my friends are giving it, so might as well study for it and give it. Practical Experience requirement for CA is 36 months. Therefore, will be at the firm for at least 3 years hopefully - which is more than enough time to sit for CFA levels 2 and potentially 3.
Post-Audit: Not sure what I want to do, maybe move into Advisory or Corporate Finance for 2 years before applying to Grad School.

GMAT:
Expected Age: 26
Experience: 3 Years of Audit and potentially 2 of Advisory/Corporate Finance
Objective: 700+ for top 15 school
Worst Nemesis: Reading Comprehension, I haven't done any mock test but I am pretty sure I will not do that great - I am saying it based on how I fared in the SAT 1 back in high school. I am sure that there is no comparison between the SAT and the GMAT - but I remember I aced the Math section, but I bombed the reading comprehension section, and the GMAT is even more difficult - so point being if I sit for the GMAT I will probably screw up the reading comprehension.
Weakness: English
Solution: Develop a reading habit.
Goal: Reading a book a week for the rest of my life.

QUESTION: What else can I do for the next couple of years in my life or what habits should I develop so that I am in top shape when I start preparing for the actual test? So far the only thing I can think of is to become an avid reader and to develop a strong reading habit. I saw the post with the list of books to read, I am going to start with it right away.

Sorry for the long post and thanks in advance!