What was your experience and advice for breaking the news to your kids?

For background, mine are 11F, 13M, 15F. Their mom was cheating on me and finally told me a year ago. I'm done waiting for her to figure out what she wants and to take accountibility. I have a rental lined up starting in the new year. Yes, she should move out, but I want a fresh start free from the triggers of this house.

The kids know we've been working on our relationship, and they seem oddly fine with us sleeping in separate bedrooms for the last 2 months. They don't know about the affairs, and I'm fighting the urge to tell them and turn them against her. We're agreed on 50/50 parenting going forward. We're waiting until next weekend after Xmas to break the news. That gives them at least 2 weeks before they'd move in with me.