I will tomorrow (Saturday) and then again Sunday be doing archive recordings of "Die Fledermaus" with a Panasonic AG-AC160A at a distance of 40 feet from the stage.

The theatre is in a community center, very old venue, some of the lighting is non-functional so at open there are some dark areas at the following opening night test run (3 min highlights of Act I)

MWOS 20150527 Chauve Souris (die Fledermaus) - Opening Night - Act I Highlights on Vimeo

I am thinking of putting the gain at +6 for the entire performance and making a point of carefully watching waveform. Good idea/bad idea?

I will be at 1080/60 24p and will try to keep the % meter around 28-32 % for the main subject(s).

Scene: Filmic
Detail -3
V detail +1
Detail Coring -2

Chroma 0
Chroma Phase +2
Color Ach 0
Color Bch 0
Master Ped -9
A.iris 0
DRS OFF
DRS Effect 1
Gamma Cine like
Knee High
Matrix Cine like
Skin Tone OFF

Any suggestions how to improve?

The opening night sound came from an on-camera Rode Videomic Pro (40 feet back from the stage).

The orchestra was over the singers some of the time (brass, piccolo).

We will be putting a Tascam DR-100 MKII at the edge of the stage, probably on Directional, so as to tone down the orchestra a bit.

There is no sound board at this venue so the Tascam is the best we can do.