I'd be hesitant to mention the cocaine if you think it's likely it was a one off. Just keep your eyes open and keep your L informed.
My XW had a crazy year where she was off the rails. In the end she stabilized and things are going smoothly now. WW's go through a party faze like girls going off to college and sometimes go too far. Let her correct her behavior.
Still document and tell your L, and if IC/L think your children are in danger then act. But if it's just you not being sure, get IC/L and don't hit a button that could destroy careers and co-parenting relationships just to want validation that you are the 'good' one.
I like the idea of a list of things with the kids, and of no TV. That's a big challenge for kids, let me know how that goes!
We have different views on dating. I understand the concept of not having as much time left to form a new relationship, to me that means you don't have time to waste on a rebound. I also don't think you're done because you're not divorced. DB road is a long one as you know. Your signature shows she walked 3 months ago...but this was also after a few years of her being back and forth. Maybe you're tired of this roller coaster. Frankly it seems like a year or two to walk the earth and get rid of that crap would do you good. If WAW came back and TRULY pulled herself together that would be cool, if not no big deal. But I think it would be good for you, and for the chance at your M.
But you already know that's how I feel. I respect your journey and certainly don't think less of you. You've been through the mill and your WW has left, filed, and had an affair, so there is no tie to her either.
Take care.
Me:38 XW:38 T:11 years M:8 years Kids: S14, D11, D7 BD/Move out day: 6/17/14, D final Dec 15