Welcome to YorkieTalk! Good luck in your search. My only advice would be to introduce the dogs on neutral territory and then walk them together. This will help with some issues that you see when introducing a new pup to the pack.
With my two, I always made sure to feed/treat/pet/acknowledge my male first (he was my first yorkie and then came our female). This has seemed to work and kept him happy. He does not feel like he's being cheated out of mommy time and Miss Khloe accepts it because it's the way it's always been
