Will the dog also be a pet/family dog? Or will it be kept in the kennel away from everyone?

I would go with a British lab. They typically have great noses, they usually trail a little slower so they don’t overrun the trail often. They are calmer than American lines so they make better pets usually. Both are great for ducks, but British lines are not as hard charging usually. British lines usually are easier to create better blind manners as well. If it was me, I would stay away from those high energy GSPs unless you were going to point with it. Just my .02