As for getting into grad school, all those majors and minors may look nice, but the important thing is to have a good idea of what research you want to do and be prepared for that. If the extra training in math, chem, or computer science is not essential, they won’t care; they’ll see on your transcript which classes you’ve had and know that it’s enough.

So if you’re not that attached to chem or math, you could maybe drop chem to a minor or stop with the math. OR maybe you don’t have to. You could audit the theatre class(es) if you’re not already taking a course overload. If you’re only auditing, you can skip nonessential assignments like papers, won’t have to worry about a grade, and the class won’t take too much of your time. Final possibility, you could look into summer school or even something like summer acting workshops sponsored by a theatre group in your community (which may cost less than summer school).

In grad school, everything will be focused on your research. Undergrad is a great time to branch out, because afterward you won’t have much time for anything else.

Good l–… er, break a leg.