CS vs Economics vs B.A.S. in both

Hi,

I’m a recent RD admit and am deciding on what to potentially major in here at Stanford. I really enjoy tech and cs, but I also want to potentially go into investment banking. Are computer science majors able to go into investment banking? How often do cs majors do that? Ideally, Iwant to get a bachelors of arts and science in both subjects. However, i dont know if ill be able to handle the courseload. How much is the courseload/how doable is it?