I am considering adding another German Shepherd to my pack of dogs. I currently have a 5 year old male stock coat who is great with my other 2 dogs and my cats. I also have an 11 month old Shepherd/ Golden R mix, who is rambunctious and silly, and a 12 year old Aussie mix. She is slowing down quite a bit, and mostly keeps to herself. These girls I have posted are 5 months old from a very accredited breeder. The top girl is supposed to be the most laid back, the middle girl is the most spunky and the 3rd is the middle of the road. The breeder lives almost 3 hours from me and I cannot go and meet the pups right now. She will hold one with a deposit. Any advice? Parents are both registered show dogs with awesome pedigrees. These pups are already 50 pounds. Update, I have opted NOT to add a 4th. Please no negative comments. Thanks.