A couple interesting notes. I'm finding that leaving ISO to auto works well for me, and filming in 1080 at 60fps.
Yes I did try 30fps but had a lot of "noise" in the blacks (keep in mind I'm caving)
I did try filming in 4k but the camera overheats which apparently is common. I ended up getting about 40 minutes but I don't seem to have any issues with 1080.
Lots of lights... that does seem to be a good solution. I have a video coming out next week with my new filming rig and I have to say that I love it. I think I may need to turn my lights down actually because I'm getting a blue'ish tinge like it's almost too bright.
You can see a bunch of my stuff on youtube under Merida Cave Diver but there's a couple things with lights... not all situations you want wide beams, some the torch light is great, others it's too dark and narrow, so I don't quite have the perfect answer / solution yet.
Hope this helps