A little bit of advice from a fellow dog owner ;-)
Read the book by Gwen Bailey "the perfect puppy", register with your local vets who hopefully hold puppy parties. I would also make sure you have insurance, don't toilet train to newspaper (imo just makes them used to going indoors) and invest in a crate so that when you are out they are secure (and your house isn't chewed up). I am sure lots of the more experienced people will be on to give you more in depth advice but the most important bit of advice is NEVER leave your dog and child alone.
Hi Kisha,
Welcome to CD, it's very refreshing to have a person come on as a new dog owner and to have actually looked into training and how to look after a pup well before getting it, so well done on that! :-)
Just being a nosy old trout here as it seems strange that as you are researching so well, as to why your not also looking at the dogs lines you are getting, temperament from that line and health issues that the dogs genes may carry, equally and if not even more important. You've spoken to vets, dog owners and breeders yet you are going for after all this research a staff x JR where you can't possibly know the size, shape, health issues or temperament, just seems strange after all this research that you haven't pushed the boat out to looking for a good breeder who can guarantee good lines through careful breed selection, especially with a 2 year old child.
If you are happy with your choice I will say no more, pups of any breed or cross are adorable, but I just wanted to sew the seed incase you have just seen this litter of pups and fallen for them without thinking through all the other issues when chosing a life long pet. :-)