I also fly a Droidworx SJ8 using 60A ESC's & emax GT2820 motors on 12x6 props APCE (not slofly). As for the video TX, you will need a 3s lipo, 7.4v will not even switch it on!
Basically you want to do what I want to do, I want to have my DX201 FPV cam mounted so that I can get in closer to...