It sounds like you have gotten some great advice. But I just can't help it... breeders who do this make me so stinking mad!
I just feel like it is so irresponsible! Now you are left with trying to teach a puppy things it should learn from it's mom and litter mates. When I raise puppies here, the minute they put their mouth on me I say "YIKES" and it sorta sounds like a puppy yelp when I do it. They learn that the humans are pretty wimpy here at our house. It's such an important thing to teach because it's just not acceptable in human society to have a dog who bites. I don't yell, spank or act harsh in any way, I just say yikes and if they stop right away, I will continue to play but if they are really hard with their teeth or they ignore my "yikes" I turn my back and leave the room. I wish you luck with your new addition.