If BigD is what you want, it is definitely warranted. Can't blame you. But that I would put "reconciling your anger" near or at the top of your to-do list. If you hold on to that, it will burn a hole in the remainder of your life and your sons'. My MIL went through it 20 years ago, never let go of the anger, and she is a shell of what she was. It also messed up my W, and I think partially has a hand in how quick she was to give up on our M.
I'm not saying you're wrong to be mad, just that you should not cling to that righteous anger. It will tear you apart. "Do not set yourself on fire to get smoke in another's eyes."
Me 38, WAW 30 D11 (former marriage) S2 T 8 years M 3 years BD 8/20/23 S 8/20/23