Should I take the job? investment, marketing, suddenly, position, studying

Nishant1

Ok, so here is my case. I am preparing for the CFA on December 2009.
However, I've decided to work while studying and suddenly I got two jobs
which I have to decide.
The first one is the position as a financial analyst that require about 80 hours of work
in a week with salary of $40k.
The second job is in a marketing company which has nothing to do with investment
but the pay is around $30k with 40 hours of work in a week.

If you were me, which job would you take?