If you're looking for a job that pays enough to support you and your entire family, I dont think cc is the right one for you. You're only 15 so your best bet would be to work that bumbaleery off at school then work hard at uni.
Hell, you could even train to be a pilot if flying is really a passion. But I really dont think cc is a job someone could do if their only motivation was pay day or how much sleep they can get
Don't stress, you've got so much time to decide.