I have no idea what to tell you as far as boundaries go. If you want to post boundaries you are considering, I can provide feedback.
It sounds like you handled the first meeting really well.
Me: 44 H: 44 Kids: 20, 16, 16, and 10 Together/Married: 22 years H announced he was emotionally detached and considering D: 4/4/16 H announced he is going to try to stay and reconnect: 5/1/16