Looks good Bunches. You've got the validation part down, you're making yourself and your son available to your wife and you're not changing your life around to accommodate her. I think you're in a good spot with how you're handling things.
Me: 31, W: 29 T: 4 M: 2 Kids: 3 (SS: 7, SD: 4, D: 3) Separated, still living together: Nov 2013 Separate bedrooms: Feb 2014 W working away; kids with me: Nov 2014