Start out simple,camera,vtx/rx,antenna(s) (you'll want cp antennas if using 5.8Ghz Bluebeams are good) and a plane your comfortable flying that can also carry the gear.
There is a good deal of fun for a new guy to be had keeping within 500m.
Got my gear at RMRC over 6 mo ago,5.8Ghz Aviator goggles,5.8Ghz 100mw vtx,Blubeam cloverleaf (built my own spw for the vrx) and a RMRC 480XV camera.
That set up has been on 3 different airframes and (Super Cub,a scratchbuilt pusher like a Skywalker and now is on my 53'' wing.
It's been a blast,really great fun and all within 500m!
With that system did u have any static on the video?