At that point...

...I would have done:

1-6: gymnastics | ballet
7: gymnastics | ballet | baton
8: gymnastics | ballet | baton | choir
9: gymnastics | Spanish folk dance | baton | choir | piano | +theater
10: tumbling 4 cheerleading | Spanish folk dance | choir | piano | theater

...If I had a computer I would had continued to think my thoughts

11: cheerleading | choir | piano | theater
12-13: cheerleading | choir | piano | theater + organ
14-17: dance team | choir | talented theater|music|art | piano|organ

...or...

1-10: gymnastics
11-13: cheerleading
14-17: dance team + drama club