Puppy range?

What I look for in my really young pups is not so much range, but signs of independance. I like a pup that's not afraid to get away from you and look around (with another dog is good, alone is even better). I have a litter of 8 month old pups now that I've been hunting since they were about six months. This is earlier than I've started pups in the past, but this is also a new cross and I was anxious. My intent on starting these pups this early was not even so much to expose them to hogs, but to observe the hunting drive that I bred for. I even purposely took them a couple times to some property where I knew there weren't hogs just to observe them and see if they would move out. The entire litter had shown interest in a penned hog at nine weeks old, so I really didn't feel that would be an issue. What I was more interested in was seeing a genetically driven, rangy hunting drive.