Sorry for having to post here but since I am new, I can't send private messages. Thank you for the advice! I did email the guy that was recommended to me in the post, and he does a lot more with the high drive dogs, so I will mention about a desire for medium energy as opposed to medium drive. I will also be sure to ask about the thresholds as well. I'm very thankful for this information. Once I hear back from the kennel I emailed, and if he has any available pups, I will post their pedigrees like you mentioned and see what others think. Thank you so much for taking the time to inform me about this!