Puppy!

Jassmine • I'm due on November 24th with our blessing. We're all excited! I can't wait to start our journey! 💗
Me and my SO are getting our new home in September, our sweet baby girl is due in November. 
He REALLY wants to get a dog, and I think it's a good idea so our baby girl can grow up with him/her. (My mom did this for my brother and these two were literally like best friends). 
If we get the dog before baby is here we'll have about 3 months to train because baby girl isn't due until late November.
If we wait, then we probably won't get a dog until baby girl is about 1 or 2. 
So my question is, should we wait, or should we not?