I feel like i may need to buy a classical guitar but...?

I play guitar and have just been using my Ibanez F5e Jazz box because it's a guitar and it's really nice. But I'm auditioning for an arts high school and i will be auditioning for classical guitar.

But I am going to need a classical guitar.
I just got my jazz box around june and it was really expensive so i feel greedy asking my parents for another one. I would get a job but no one is hiring and there's no way i could save up enough for one in time.

What should i do? I really want to take this opportunity but i feel really greedy, and i feel like my Jazz box won't get much use if I buy a classical. I mean i do like a lot of indie-rock so it might..and i might join the jazz band at my school if i don't make the arts high school (and whoknowss maybe they have a jazz band)...so what should I do?

My dad is afraid this is a passing thing and is telling me i don't need another guitar and my mom will just try to make me happy.

The thing that is making me not sure about it is i might not make the arts school...and my motivation would go down a lot if i don't.

I AM SO indecisive about this. (and everything)
I've had someone tell me that i should just get a really cheap guitar for the time being but then if i need a better one i'll have 3 guitars and feel even more greedy...
What should I do?