You have it very well together. Worrying about how your STBXHJ 'S bad choices is going to affect your kids is natural. Hopefully, they will get a good lesson in life from observing the mistakes he makes.
I too have been dating someone that is really great and understands about what it takes to make a strong relationship. I dont know if we will proceed to anything other than friends and I am just taking it slow. Seeing someone like that sure makes it easier to let the wayward spouse go and not wish for them back.