I run 2 different systems in whole and part.
immersion 5.8 600mw transmitters are great but limited in range, need cp antennas to use in flight. depending how high your noise floor is at current, this may or may not be enough. Alot of people are using and having succes with BOSS CAM transmitters, there the 500mw 5.8 vtx's with the fan
My main system is lawmate 2.4 video but i use immersion EZuhf on my radio instead of 2.4 to do so and a ham license. Immersion 5.8 retransmits the 2.4 feed to my monitors, other peoples goggles in range, etc. Makes everything wireless whether it's my tracker or remote antennas so can place them in the best spot possible and stand in another spot during flight, like shade or at least out of frame
just tried to upload some hero3 live feed i had captured but my dvr that captures that stuff is dying and didn't record any of it. I've been using it recently for directors to see a live feed from the cam