I’m an undergrad in CS (one of my majors), a researcher, and on track to be hired as a graduate researcher during my MSc in CS.

I say this from my background, experiences, and studies. Having not gone through a masters yet but preparing to enter one, this is what I perceive is expected of me by my faculty: I don’t feel that this is nearly enough to be competent for a masters in CS. I may be seriously overestimating the rigor but, even with all of those classes complete (except Discrete, which is the most serious and relevant CS course on this list imo), you’ll be deep in over your head. If the undergrad experience is representative of the step before the masters experience (which I’m not so sure of), you should have thorough experience with data structures and algorithms, intermediate competency with Python, Java, C and at least beginner-lever experience with a few other languages, experience building applications on a team and contributing to open source projects, thorough experience with version control, experience setting up development environments , testing, and this is all besides theoretical backgrounds like Automata theory, parallelism and networks, foundational knowledge about languages and computer architecture, foundational knowledge about programming paradigms, and so on.

A background in math will not help you much at all unless you’re working in algorithms research or graphics.