From DSLR to One Shot Colour Camera. Darks, flats, dark flats, unity gain...etc

[Bluemoonjim]

Hi

Would be happy to have peoples input here.

I've just made the move from unmodified DSLR to OSC camera (AltairAstro 269c)

I did have a pretty good routine with calibration frames using the DSLR and thought the OSC would be much the same but...I am confused.

With a OSC camera:

1. I am presuming that dark frames still need to equal exposure time of the lights (as with dslr) is this correct?
2. When shooting flats, is the governing factor setting the histogram correctly (ie whatever exposure and gain setting is needed)?
3. If using dark flats, can I forget about bias frames?
4. Is 'unity gain' something I should be aiming at for all imaging?
5. Is the 'live stacking' process like using DeepSkyStacker, so that the final image can be processed in Photoshop. 

First light with OSC camera last night and had some success using SharpCap and letting the histogram 'brain' choose my settings but seemed to end up with longish exposure times (4 - 5 minute subs). I can't quite figure out how to set shorter exposures without moving away from the dreaded 'unity gain'. 

That'll do for now