Got a DJ Phantom 1 and am waiting on a FatShark FPV system. What cable do I need so I can use the video from the GoPro rather than using the small camera which comes with the FPV kit? Second question, I'll be using my setup for real estate videos (I'm already a real estate photographer so it fits in nicely with my business). Are there transmitters which allow me to trim the controls so I can make my pans/etc. nice and smooth? I don't believe I can do that with the stock transmitter (?). If there are transmitters available which one would you suggest? Thanks a bunch!