What little I've learned fits with what Tudurgs said. Also, a "big running dog" can be trained to hunt close and big on command. Training a dog to hunt bigger or faster than it naturally hunts is like pushing on a rope.

I think you're on the right track with a GSP for a good breed that can do it all with speed, enthusiasm, and be a good companion. The allergy issue is something I just deal with. Frankly, I don't think there is such a thing as a hypoallergenic dog. It isn't the hair that's the issue. It's the dander.

If you're a novice like me, I recommend you consider buying a trained dog from a reputable bird dog trainer. I did and I'm glad I did.