I myself, can't wait to have kids and I think Titan will be a great big brother to them. He's absolutely awesome with my niece and nephew (8and 6), however he's never been around an infant before. But, at x-mas my niece got some new doll that cried and did every sound a real baby makes. At first Titan was kinda scared of it, but he quickly learned to lay by it and protect it as if it was his. And when my nephew got his new puppy Titan protected it like it was his own. I have no problem believing Titan will be protective of me or a baby, just hope he's not too protective.
Hope the baby comes soon for your sake, I know it will be in good hands with you and the dogs. Good Luck!!