Freshman year schedule (also math major)
FRS 119 (cinema and philosophy: an introduction to media theory)
FRS 154 (our struggling schools)
WRI ??? (mad scientists)
Freshman fall, I spent almost all of my time on my math class. That wasn't the case as much spring semester, but has been every semester since then (as I now take two math classes per semester).
If you find a writing seminar in a topic you really like, it can be a good experience. Unlike most humanities classes, writing seminar takes a lot of time during the semester, as you'll constantly be having drafts, revisions, etc due.
Freshman seminars are great. I got into my first choice both semesters, and I think that was because in both cases I was really excited about the topic and let that through in the application. They also can help you fulfill distribution requirements.
I ended up hating physics and waited until junior spring to take my second lab class (a computational neuroscience class that I really enjoyed). Lots of people take MAT 215 and PHY 105 together freshman fall, and it's usually pretty obvious which one you want to major in.
Get your language requirement out of the way as soon as possible.
COS 126 is a really fun class and is a good idea to take for just about any major.