Thanks for the responses! Best advice so far.
In response to why I want to choose Wharton: I chose Wharton because it is considered the best MBA program for finance. I couldn't really put trading in a major so I assumed finance was the closest subject.
I didn't know that there were schools that would better prepare me to become a trader. What schools are you talking about? I am very interested.
Thanks for the advice on the B's. I think I'll retake a couple economics classes, and go for straight A's for my Junior and Senior year level classes. That should move my GPA up to at least 3.75.
Maybe instead of taking summer school to retake the "bunch of B's" I'll look for a good internship too like you said.
Once again thanks for the help.
thanks thanks thanks