Go to some college and get most of courses done there and then transfer to Cs. This could probably take 2+3 yrs. Go to university and then go Cs you will look at 4+2 yrs. Both way works.
Maybe your way will be the better way if you can get a very good scrore in courses. Then after school you might get in public practice. Then you on track. This could be the best way to go and for your age it is not too late. But you got work very hard to be the best. Otherwise maybe the first way is better.
May I ask are you interest in accounting at all?