Thanks for the clarification, Acc. I can see the differences. I wouldn't place any money on me being healthier, though.
To answer your question, yes, D/custody has been discussed. H has threatened to ruin me financially and fight for custody of S12. He was D'd before and has a D lawyer, so he has experience with the process to his advantage. I've seen his ugliness with his ex; I would never want to put my S12 through that. It's only 5-6 years, I can do that for him. I recognize that this sitch isn't perfect for him, but I'm positive D would be worse.
OT, I've looked into finding a CoDA meeting. There's one near me on Sunday evenings. I'll give it a try. Can you describe for me what a "beginner's mind" is? I've heard it a lot, thought I knew what it was but perhaps not.