Taking sunrise photos is out of my element, and I've never done bracketing previously. So here are a few questions. I'm looking to take sunrise photos with its reflection in a lake. The images will be especially bright since the foreground will be water. The body will be a D750 tripod mounted and want to try Luminosity Masking for post processing.

- Is it better to set my +/- exposure compensation for +.67 to +1.0 before I take the images since the sky needs to be exposed properly? If I can get a little detail in the tree line on the opposite side of the lake, that would be great. That would be the only shadowed area in the images.
- Which mode would work better? Aperture Priority without Auto ISO making the shutter speed be the variable that changes. OR would it be better to be in Manual Mode with Auto ISO making the ISO the variable that changes?
- And would 5 or 7 bracketed exposures work better?