Quant Finance/Financial Engineering UG

I am currently a sophomore in high school w a deep interest in economics and finance, especially the quantitative side. Based on a variety of factors about myself, I want to study something in the area of quant finance and financial engineering as a undergrad, but these are exclusively postgrad specializations. Any advice for a undergrad major? I feel econometrics/mathematical economics (as offered by Wharton, for example) is too theoretical and academic for my goals, regular finance or economics is not mathematical enough, and I don't want to be lumped in with that crowd come job search/internship search (as a background, I'm currently studying multivariable calc and linear algebra both). I also want something that teaches transferrable skills that can be applied to technology and AI down the line, after I've spent time in high finance and may do something in the startup space (ex. the calculus in mathematical economics and vector dealings can be applied to AI maths).

So, thoughts?