The one thing that all hunting dog trainers will agree on is that you can never put the prey drive into a hunting dog. They are either born with it or will not have. Your best chances are going with dogs that have been bred for those traits.
The other thing to remember is that pointing dogs in particular are athletes and require daily exercise. If they don’t have this release they will find it other ways, and usually in a negative way.
Another important aspect of early training is socializing i.e. exposing them to people, experiences and situations. with proper socializing you will have a bold, confident dog, that can function as a family pet and a hunting partner.
Most people do not understand how dogs learn and respond to training. First and foremost you need to be the pack leader, if not the dog will assume that role. When you watch Caesar, on Nat Geo 9 out of 10 dogs he has to deal with, the owners are weak pack leaders.
I was told by one breeder that GSP don’t make good family dogs. Nothing can be further from the truth. They can make excellent indoor dogs, mine know its time to go to work (pure enjoyment for them) when the hunting gear comes out and we head for the pickup.