i cant decide if i should join dance?

[Cas]

okay i am really confused what to do so this is going to be a bit long. i will start by tellilng you what i look like . 5 foot 3 inches 105 pounds and im 15 years old. i really want to try jazz. but im in my sophomore grade and think its too late to start. i have done gymnastics for 12 years then quit just this year and moved into tennis and made the tennis team for school and now the season is over. so im wondering if i should train more for tennis, do jazz, or do jazz and tennis. jazz is 2 times a week and so is tennis. i just really do not want to do. am i to old? please be straight out honest and tell if i should do it or not. i dont want to read "do it if you really want to!" or "whatever you think is best" just please tell me with everything going on my body type what i should do. thank you so very much