Academics: You want to take the most challenging classes you can but still do well in. It isn’t about who takes the most AP wins…but do try to take some. Don’t think you need to "pad’ your APs by taking like AP Env Science (unless you are into that.)
Sports; Do sports if you like sports.
Music: Do music if you like music.
Clubs/volunteering: Top private colleges do want to see you have interests outside academics…and they like to see you give back to the community and show leadership. But all of these should be in areas of interest to you.
Jobs: Some people need to work. I would work/volunteer in the summer if possible.
Check out “How to be a High School Superstar” by Cal Newport.
“The basic message of the book is this: Don’t wear yourself out taking as many classes as you can and being involved in every club and sport. Instead, leave yourself enough free time to explore your interests. Cultivate one interest and make it into something special that will make you stand out among the other applicants and get you into the toughest schools, even if your grades and scores aren’t stellar. Newport calls this the “relaxed superstar approach,” and he shows you how to really do this, breaking the process down into three principles, explained and illustrated with real life examples of students who got into top schools: (1) underscheduling—making sure you have copious amounts of free time to pursue interesting things, (2) focusing on one or two pursuits instead of trying to be a “jack of all trades,” and (3) innovation—developing an interesting and important activity or project in your area of interest. This fruit yielded by this strategy, an interesting life and real, meaningful achievements, is sure to help not only with college admissions, but getting a job, starting a business, or whatever your goals.”
http://www.examiner.com/review/be-a-relaxed-high-school-superstar