Hello, I have just taken the June exam and I believe that Shargel is the best book for this exam. You will need a management book e.g Manon as Shargel does not cover this in detail. Medicinal chemistry was huge and so was pharmaceutics. Good luck.
I would advice you contact NABP before applying. They have a waiver for some Canadain graduates depending on when you graduate. They may allow you to take NAPLEX right away.