I am curious how this will work out for you. I am in a similiar situation, but do not have the courage, or feel firm enough in the direction to do what you are doing.
I do worry about your motives. Is this really what you feel is best for you and your kids, or is this a tactic to manipulate your W into coming back? I think any action that is focused on manipulating your W will have negative reprocussions long term.
Worrying that my motives are not right is one of the reasons I am holding off.
Being plan 'B' is awful. But maybe, swallowing your pride, and letting your W work through this on her own is what it will take for real reconcilitation? I am completely conflicted, so I offer this as a question rather than as advice. I really don't know.