I am not from tennessee but think about this. Tell them you use the marijuana for a medical reason. If you can't stay off smoke either tell them, they possibly could send to rehab for a while. They will probably make you piss every month. If you cant keep from getting busted a year clean might help. Lawyers will drag your case on and on for more money but would be a smart idea. The idea of locking someone who is addicted to drugs is barbaric.