Exercising your rights is one thing. Engaging in trench warfare is something else entirely.
I’ve been through a divorce and a custody hassle, and the one thing I can tell you is that the term “living well is the best revenge” is 100% true, especially when it comes to the kids. Your kids will each turn 16 one day, at which point they will be able to make their own decisions with respect to custody and lifestyles. And make no mistake, when that time comes they will gravitate to the parent who can help them solve their problems, not the one who causes all the problems.
My ex relied on the legal system to get what she wanted and she ultimately ended up alone and pissed off. I gave her everything she wanted without fighting it, and I ended up with the hearts and minds. She’s not a bad person by any means, but she lost sight of the big picture and now she’s paying for it.
Each of my kids left my ex at their first opportunity (between 15-16), and came into my household to grow up. My ex couldn’t stop them, even though she was convinced that I am the Devil incarnate.
I guess what I’m saying is that regardless of what happens over the next 6 or 7 years there will be another 40 years after that in which you’ll have to live with your decisions. As angry as you are at this moment you shouldn’t allow it to cloud your judgement or infringe on your long term goals.