Freshmen Aiming to be an Investment Banker

Hi im a current freshmen in St. Johns University, my aim is to get in to Wharton School of Business after two years. i need help on what to do, to make my resume look better. i am currently on an internship in Dubai, and i am interested in participating in many others. I know most internship are given to sophomores but i was wondering if there were any that would accept a tenacious freshmen. Also i heard about investment banking boot camps, does anyone have suggestions on it? and if so, which one should i apply for. If there is any other programs i shouldbe aware about please inform me.

Also if i take precalc in my freshmen year does that look bad, i have taken a placement test to bump into calc but if the scores are lacking i am wondering if being in a precalc course would look bad and hinder my chances of getting into a school like Wharton.