NEED ADVICE!! IB Internship

Hello everyone, I am in my last semester of community college and have offers from UCLA BizEcon and USC Marshall. I have not selected a school yet, but I have a few questions regarding internships. As of now, I lack professional finance internships/experience and was wondering what I should do and how I should plan out my time when I transfer? I plan to start preparing for interviews because my mentor provided me with all the information I need. However, I don't know what to do in terms of gaining experience. When I transfer, should I go for regional boutiques throughout the year and summer and start working towards FT offers my senior year? I really need some advice. The only financial experience I have is w financial blog I created that helped my community college students with risk management and financial literacy. Also, I created a stock trading club at my CC where I held competitions. I worked fast food, but I presume that information is irrelevant.