Interested in Harvard?

I am a highschool junior with a 4.2 GPA, i am in all Honors and Advanced Placement cles possible. I am captain of the varsity tennis team, i am in chorale and chamber singers (performed in Carnegie Hall twice going to for a thrid time- all with my choir) i am also in the band and jazz band ( flute/ tenor sax). And on the SAT's i scored 2200. Now as for the future i hope to go to Harvard university (if i can get in i know the acceptance chance is 8%) and then i plan to attend Harvard's medical school. what would you recommend i do to prepare to apply to Harvard. ( i also wouldn't mind knowing if you think i have a chance at getting in?) thanks alot.