Just some general advice about multi-major/minor/premed/prelaw/etc. schedules:
In general, you can always fit what you want into your schedule. Do you necessarily want to? Maybe, maybe not. I know various people who have decided to double major in two very different fields and can still graduate on time. This requires some things:
1) Planning. You need to start planning your schedule in your second semester in freshman year. While you may think it's easy just to be taking the right courses, you have to take into account whether the courses are even offered and then if there not, what to replace them with to keep yourself on track.
2) Be prepared to overload (take five classes instead of four) and realize that your grades will probably drop a bit from the overload. If you don't want to overload, you may have to stay for summer school.
My roommate is a Biology and Physiology double major with premed requirements. She can graduate on time without summer school and overloading two or three times. One girl is a Biomedical and Computer Engineering double major with premed requirements, and she can graduate one time with summer school. Another is Mechanical Engineering and French double major and can graduate with some overloading and with studying abroad.
However, some people decide to do one thing they love and spend the rest of their time take classes they enjoy and take for fun.
td;dr: you can do anything combination of things with planning, but remember that just because you enter college with an idea of what you want to do, it doesn't mean you can't change your mind.
Be open to new ideas; yes, a lot of premeds drop out but it's usually because they just find something else I love more.
And unrelated double majors? The most awesome thing in the world. Do what you love.