You would tick Ignore invisible if there are other things in the scene that you don't want to paint, and if you've set them to hidden (Visible:No). Otherwise, for painting, those shouldn't matter.

You need the uv coordinates, the other stuff should be optional.

You don't need groups at all

You might want Surfaces, if you are going to paint only selected material zones. You will certaibly want them if this is a figure that uses different maps on different parts, like the DAZ humans.