CS/Math double major is not too bad if you can handle the Math theory coursework. Many schools have a basic Math degree that was created to dual with another STEM field.
As Caldud said, most tech jobs today are about what you can do, so the Masters is really optional.
Back in the dark ages I did a BS in Math and then a MS in CS because I didn’t have the programming skills and jobs were scarce. By the time I graduated the economy bounced back and jobs were available.
My son’s school has a co-terminal BS/MS program. Start grad coursework in senior year and then stay one extra year. Its a great deal if you go in with lots of AP or DE credit and can complete it in just 4 years.