There are multiple possible outcomes. You should not be considering filing just because you think you know which outcome will result. It would be a roll of the dice. Of course, you may reach that point.
She might get her little world rocked and ask you to give her time. If that happened, and I doubt it, some counseling would need to begin or it wouldn't really be change would it?
She might say thank you and blast outa there. It might not feel the way you expect either.
She might say give me a year alone in a one room apartment, and then we'll see. Hey, at least you wouldn't have to walk circles around her in the house. You could both use that time to divide assets as you both test reality. Let her see what single would really be like. You and the kids in the house. Finances balanced fairly. While she might actually like that option, it would make you linger another year in limbo. Does not seem the direction you are leaning, but you would avoid looking back and saying that you made hasty decisions.
Relax and think. Take your time. Be fair to yourself.
