Help with university stuff! And high school stuff?

You should talk to your advisers in either high school or college. Really when you're choosing a school you don't need to look for what cles to take, just to see if the schools you're looking at have good biology/medical programs. And the SATs are not exceptionally difficult, they are really just testing you on your ability to take tests. It's all strategy. Try to find an SAT cl or take practice ones.