3, I would say what you are doing is working. Talk only about the kids and make your plans without H in mind. Then if he wants to go he can, but let him ask. I think it's good for him to miss you all!
Agreed, it is so nice to not think constantly about where they are, what they are doing. Yes, it comes in waves but seems to get easier. Keep doin' what you're doin', I say!
From what I observe it really seems to be working for you.
Me:49 H:47 S: 16 T:27 M:25 My EA: 2001 His PA: 10/2007, 6/2013 Separated, but H still in house
Find your Shambala: a place of peace and happiness.