I managed to score a nice condition DJI Phantom 2 v2 on craigslist w/a cheap gimbal system, but it lacks a video transmitter. I might be able to get a pretty good deal on a GoPro Hero 4, what’s a cheapo option for a video transmitter, receiver and monitor? I don’t really need great resolution, I just want to be able to see what the GoPro is recording. Any suggestions are appreciated. Thanks.