Welcome fellow baystater!! Post up a pic when you get a chance, would love to see your pup. How old? If your pup is little there is no guarantee that they will be life long friends with any other dog or cat you get. Pit Bulls don't needs doggie friends, they just need their family to be happy. As long as you never leave them alone together and realize one day you may have to live a crate a rotate life. What kind of dog are you looking for? A purebred or a rescue?
“When you KNOW better you DO better.”
― Maya Angelou