How long will it take to get onto pointe?

Hi! I have been taking jazz and tap classes for 7 years (counting this year) and modern for 3 years (again, counting this year). Two years ago I took a semester of ballet, and the year after that I took one full year of ballet class. As of now, I am taking three ballet classes (1 pre-pointe, and 2 technique classes) which equals to roughly + 225 minutes a week. Then I am currently taking 75 minutes of jazz and tap a week and 60 minutes of modern a week. I am fairly good at ballet and I can hold a releve passe balance (without a barre) for around 10 seconds. I also use a resistance band usually once a week and do eschappes and releve's at home. I am also 15. I feel very confident about dance and I am one of the best in my class. However, I have only had about 2 years of ballet experience. Do I still qualify for pointe shoes? I know it really depends on my teacher, but I would like a rough estimate of about when I can go on pointe. And don't worry, I am not going to go buy pointe shoes without permission. I'm not that stupid :) Thanks guys!!!