Entering M.S in Financial Mathematics after 7 years removed from Calculus

Hi all,

I am entering a M.S in Fin Math program in the spring semester, and need to really recall calculus. I still feel like I know it good enough that I don't have to go through a whole 1000 page calculus book in the next 3 months and actually re-learn the material ( I have taken multi-variable calc and stats).

Do you guys think it is a better strategy to use " A Primer for the Mathematics of Financial Engineering, 1st edition", and go through about maybe half of the book in the next 3 months while filling in gaps of knowledge with Khan Academy? I work full-time.

What strategy would you use?