I love German Shorthairs but have little experience bird hunting over them. I have bird hunted all over KY, IN, IL, and TN over English Pointers and Setters and Brittanies. I have heard good and bad about GSP's characteristics and think one would be interesting. I know a few people in MT that had them as pets as as long as they got plenty of exercise they were great.
I will say that any dog will destroy furniture, shoes, curtains, etc. if they are not kept busy or left alone. My buddy had a Lab that ate his coffee table as well as the rear screen door of his house. I saw where a pair of Jack Russel Terriers literally ate a couch one day.