I'd highly recommend heading towards the gh4... 2 man setup so you can get the whole camera part off your plate and just concentrate on flying the perfect paths/glide slopes, etc.
Having seen the results on this forum from the GH4 I would agree. Unfortunately it does not have an SDI connector to output to the Cobham and the aim is not to record on camera, that is to say we will but only as a back up. We are not in the 'cinema' market, I am happy to leave that to the incredibly talented people such as yourself and in my part of the world, the very talented (and athletic) Lec Park. We need a very robust but light camera which outputs via a SDI BNC. We have FS700s but they are a little too heavy and possibly not up to daily use in a typical UK environment.
Of course, this all sounds very brave at the moment, but with a deadline fast approaching, we might just end up with a GH4 and an HDMI adaptor
Clive