Thanks for your comments on my thread. Of course I'm new here too, but I read your thread and I'd encourage you to read the Divorce Remedy too. I found it to be a better fit for applying the 180, "as if", etc. concepts and I think you might find it useful.
My two cents would be to really, really give her some space now that she's moved into the apt. Occasionally, call or text, etc. and start a journal or post it here so you can record what you tried, and how it worked.
I echo your concerns over closing accounts/taking spouse's name off the cards and how spouse will 'feel' about that. I think the conventional wisdom here would be not to worry about with your W thinks about that right now - just take of yourself and make good choices for you. Let her see that you're strong, you're taking care of yourself, and you'll be fine without her. Working on GAL, like your long workouts, and being with friends. I'm feeling much better than I did two weeks ago by working on GAL for what it's worth.