I always learned to look at the size of the paws, and according to the pictures his paws look not too big but not too small. If I had to guess, and based off the information given, I'd say around 65-75 pounds. His coloring will most likely darken a bit as he grows. His fur now is so beautiful, I see a hint of sable? Well, he is a very cute puppy and I hope you two have fun together! Best Wishes!