The advice is keep playing the game, but don't lay out the cards on the table yet.
Document your time with your kids, document time she is away from the kids (in a disinterested way: STBX left at 3:45pm, arrived home 2:17 am. I made dinner, played with kids in yard, went to library, bathed kids, then put them to bed).
Get a boatload of days like this journaled. You have strike one against you: You're male. Strike two is: She's SAHM. Don't whiff on this ball, otherwise you're EOW, maybe with a dinner thrown in on Wednesday night. Hold back the bile, and stick it out for a few more months before filing. Because once you file, or indicate you're going to file, expect the fight of your life. Best offense is a good defense. And your journal is that defense that will keep you in your kids' lives.
Audaces fortuna iuvat.
The meaning of life is Happiness. What makes you happy? - Dalai Lama
For a more peaceful life, live the serenity prayer.