Hey guys had a few quick questions. I recently just began to get into Ardupilot and I really like the system and the way it is made, so I want to purchase one for my quad copter. I have a friend that owns one of the Arduplanes and he absolutely loves it. So which systems would I need to purchase to make my quad copter fully autonomous? So far Ive got Ardupilot mega, IMU Shield, GPS Module, Airspeed sensor and the APM 2.5 autopilot. Is that correct or is there something I am missing? I would also like to know is there a package that has all of this in one package?