Which Stanford undergrad + grad school major combination is best?

Note: This is all just goal-setting/planning.

Here are the options I’m considering; the Master’s is through the coterm program:

B.S. Degrees:

  • Symbolic Systems
  • Management Science and Engineering
  • Computer Science
  • Economics

M.S. Degrees:

  • Management Science and Engineering
  • Computer Science

My goal is to become a Product Manager at a tech company and later on start my own business.

Which combination of the above B.S. and M.S. degrees would be best for this and/or give me the most career flexibility (ie. possibly allow me to pursue a technical position like software engineer).