What's the ideal age for septoplasty?

I understand that it's best for children to wait until their facial structures have matured before undergoing cosmetic/aesthetic surgery.Being almost 15, I'm thinking about having this surgery over the summer of 2016.I started puberty at a fairly young age(about 10)and I've had my period for almost 4 years now.I'm willing to wait longer if necessary.And if that's the case, when should I consider to do this?I have minor breathing problems due to a past injury, but it's still noticeable.Thank you.