Invisalign Candidate?!

So I'm starting to be more self conscious of my teeth right now since i'm getting older (15 years old) and so im starting to consider braces or invisalign. I know it's kind of a late age, but I've always needed braces...both my top and bottom teeth are crowded. On the bottom of my teeth I have one tooth that needs to come up with the rest of my teeth, because it's behind the rest of my teeth and my top teeth are basically just crowded and need a little bit more space for everything to fit perfectly. I also have an overbite. So Ive been considering invisalign over braces,its a lot easier to have in high school since many important pics and stuff have to be taken in high school and im also a singer so i dont want my braces interfering with the way I talk and stuff. The only thing I have a problem with the invisalign is the price obviously. Overall, though would I be a good canidate. and for those of you who have had invisalign how much did it cost for you if u happen to know? Thank you soo much! Just as long as I have straight teeth in the end, the more happier and confident I will be :)