Hello, I am brand new to the DJI Phantom 2, I just purchased a used DJI Phantom Vision 2 without wifi extender and camera and have some questions. First why would someone keep the camera and wifi extender when selling the device? I am looking at purchasing a gimbal for the device for around $150. Can I put a gimbal on the P2V? What would you recommend? Also any other recomendations for a brand new Phantom flyer to check out please tell me. Thank you.