From my experience, the actual classes you take in high school do little in helping you to get into a college. So just take the courses you feel will benefit you more.

I would suggest that you go with the AP Calculus course if you have to take only one. The stats class can always be taken in college and a calculus based stats course is much better than an algebra based course. I would also suggest that when getting into college you go ahead and retake calculus. It will help with the transition and will help you learn the concepts.

Both courses are very important but in the big picture. Depending on your major and career field will determine which is more important to you. But like I said, a good stats course uses calculus so you might want to start there.

good luck!