The main thing i look for at that age is good toe placement and good beard and muffs... Do not look at the color it changes way to much after that to be able to tell anything... Also i would look at size and general health and vigor... make sure they have a strait breast bone... also make sure u get enough males to start a breeding program... if it was me i would get 3 males and 7 females...
Oh one more question. So at 10 weeks is there anything in particular I should be able to look for to make the best choice from the 20 candidates? I'd love to end up with at least one that's going to grow up show able.
Or is 10 weeks just too young to tell.