I could be totally wrong about this, but I think you might be my backyard neighbor!
First off Congratulations!!!!! Exciting times are coming soon!
I was raised with dogs my entire life,.. and up until just recently we finally got our own family dog. She's a big one though! I was worried how she would be with our son, especially since hes a toddler and can be rough, but she is fabulous! You just need to encourage good behavior remind them to "be gentle".
Dogs are very intuitive too, they can sense when someone is ill, or when a new child comes into the house. Let them smell the blanket, they will want to smell the baby and lick him! My parents dog (blue heeler) always has to smell and kiss the new babies, its a dog instinct to smell and get familiar with the new member of the family. So you don't want to shun them away but let them get to know the babe as the new member of the family. In no time they will become very protective of you new wee one. But since there are two pups, you may want to let them meet him one at a time that way its not too overwhelming for you, daddy, the babe, or your dogs!
Congrats again! That would be very cool if you were my backdoor neighbor,.. instead of swapping sugar we could be sharing childrens tylenol! ha-ha!