What charges can the cops press on me? Should i get a lawyer? Is there a possibility of my record being/staying clear? Can impound fees be dropped?

I am 17 years old, so are my friends.I was pulled for supposed failure to signal.It was me and two friends in the car.Long story short the officer walked up and saw a marijuana pipe in the back seat resulting in him searching the car.He found a large bag of individually bagged marijauna in the back along with a scale.He then searched us and found a small pipe on me and more weed on my friend.No one claimed what was found in the car and we all were arrested.Then as we sat in the cop car the cop called a tow truck and impounded my car.Once at the station the kid with the Marijuana on him finally confessed that the marijuana in the car was his also.I am now facing a failure to signal ticket, possession of drug paraphernalia, and possibly possession under 2.5 grams since there was resin in my pipe.The cops say my friend will get intent to sell among other charges resulting in a class two felony.The cops are now saying i will get the same charges as him since it was still in my car.