Wow, you're only 16, and doing coke. Gee, times have changed. I feel so old and I'm only 29. So kids are no longer smoking pot behind the shelter sheds, they're doing coke?
It really isn't worth it. My best friend (she's like a sister to me, since we were 12 yo) is currently in jail serving 2.5 years for importing coke. She and I dabbled a lot, but only really did coke in social settings (say every couple of months). The 8 ball thing, that sounds like a lot - do you do this in one night??
Anyway, as soon as my BF got done, I stopped (all drugs). After reading all about the nose issues and further problems, it reitertates the fact that white stuff just isn't worth it. At least we know that alcohol doesn't kill you or stuff up your nose. As long as you don't drink to the point of needing your stomach pumped, you can have a pretty fun night out. Talk to your friends, and make the right choice - if you have to get "high" or happy, just get drunk!
Good luck, and don't succumb to pressure - you should share the nose info with your friends and tell them they'd be dickheads to let their face get f*d up over a good time.
Reformeddabbler