How hard is it to get into top MSF program with an economic degree from Cal?

<p>I am a junior year economics major student at Cal. Recently I am very into finance area, and thinking of going to a MSF program to learn more about finance. However, I am not sure how is it going to be accepted by those top MSF programs. I don't have a strong GPA(only ar 3.5), and don't have an impressive work experience, haven't taken many advanced math courses. So what are my chance of getting into those programs or Is it a good idea for me to take the GMAT test and apply?</p>