One other thing: in the D part of the discussion, she said that she is considering moving out for a couple of months prior to getting a D. Leaving me with kids. That's not normal W, or even WW behavior, is it? Moms tend to take kids with them, don't they?
My W moved out and we share the kids 50/50. I don't think it would be fair to you if she left and you had to care for them 100%. IMO if she leaves you need to come up a custody arrangement.