Desirable Skills, Hobbies, Talents to Develop/Expand upon for a High-School Senior?

Hello all,

I'm currently a high-school senior who has just applied to colleges with plans of majoring in finance and pursuing a job in IB, PE, Asset Management, or Equity Research.

I'm kind of lost, so I just like a little guidance to put me on track to building a strong resumé. I applied to a handful of target/semi-target schools, but there's a chance that I go to a low target or non-target for financial reasons or because I don't get into any targets.  What are one or two skills that could make me stand out as an applicant? Do you think I should use my time learning technicals (financial modeling, etc.) or work on developing a skill such as building upon my second language (Spanish) or learning a third one?

I'm more or less afraid as coming across as a generic, white male with nothing interesting or unique outside of a strong passion for finance. What advice or recommendations could you give to me to make me stand out more, as I have some time to start developing?

Thank you so much for your response.