just like to say i think what you're doing takes more willpower than some people seem to realize, no matter how someone might judge what you've done. i think you've done the right thing stopping both smoking and selling. although i think that a little smoking won't hurt most people, anything in excess is bad, and you were certainly doing it in excess. it was only a matter of time until you got busted.
not to alarm you, but:
if i were you, i would move away, now, and drop ALL your friends. explain to them what you're doing if you want, but don't tell them where you're going. maybe don't even tell your parents where you are going. you really have to start fresh from the ground up. the reason is if any of your friends or if your suppliers get busted, you are going to be pointed to as the narc, and if you already know the suppliers are "keeping tabs on you" then you know you're putting your safety in their hands and their risk is your risk, even if you're no longer dealing for them. you don't want to get shot because someone else got arrested. get out of the area now and hope that they stay afloat for a few months and forget about you. not to mention if some high schooler gets busted for possesion and freaks and tells the cops everything he knows, you could still be mentioned, since obviously word isn't getting around. you might not get busted on possesion, but if they nail the whole group, you'll go down, too, on the strengh of all their testimonies (and they will testify against you). maybe there's other reasons to stay or things i'm not taking into consideration because i've never been in your situation, but as an "outsider" looking at your situation, i'd be seriously paranoid right now.