This is just my opinion, so weigh it against what your gut tells you, but I think it is time to have a serious talk and voice your concerns, all of them. Having another child is big and if he has any doubts in his mind about the M, this is the time to find them out. I can only imagine what it would be like to be pregnant and be wondering if he was going to fall back into MLC mode. I also understand the concerns of age, and computing how old we'd be when they graduate college.
Whether to have the conversation now or in a few weeks, I don't know, but he seems anxious to get started on child #3. Now, I think that is a great sign, he doesn't sound like someone who would want another child yet be on the fence about the R, but, perhaps I'm projecting my own fears onto you, I would want to be rock solid in knowing that these things are fixed, that the reasons he felt he needed to leave before have all been addressed and resolved.
Would he do retrouvaille? It sounds like a great communication type weekend. Possibly an opportunity to bring all this up within the safety net of having group guidance in how to do it? Present it to him, as I'm excited to have a third child, yet for my own peace of mind I'd like to do this weekend to make sure there aren't any unresolved issues between us that we might not even recognize?
Good luck, and I think this is great insight into his mind, that he is seeing you guys as a family when you are 70 and are surrounded by grandchildren.
