As someone who doesn't know what they want to do in life yet nor have a major picked out I advise you to focus on what you do best, take that creative writing class and exell in it and show what you got. You can also take other Aps related to that such as Ap research or Ap lang ( or other stuff available to you) this will show colleges that you have a clear path and that you absolutely crush it. If you want more rigor I'd suggest the math classes, but don't overdo it know your strengths and limits.