What fines and punishments should i expect as a 1st time offendor and a minor in family court? (please see details for information)

I am a minor and a first time offendor. I dont smoke marijuana and was drug tested by my parents and tested negative. I am being charged with possesion of marijuana, intent to distribute and possession of CDS paraphernalia, and a second possesion charge (i dont quite understand why there were 2) and i was within 1000 ft of a school zone. I had on my empty baggies and roughly 15 grams of marijuana. Heres what happened...Me and my freinds were hanging out playing baskettball at a public park and one freind had to leave early but didnt want to bring all of his marijuana and bags home with him so he asked if i would put it in the woods for him. Idiotically i agreed and didnt think much of it. Then two of my freinds lit a joint and then a police officer came up and searched everyone. He found on me the previous stated amount and items. I am no lieing but im sure judges here minors say "it wasnt me or mine" all the time. If i am willing to give up names of dealers what am i possibly facing?