If its your first gun dog to be trained I would opt for the female. Tend to hunt for you a little more naturally than a male. My first male was very high drive, very high talent, I had a lot of help from Vetran handlers, and there were times I still felt like just the taxi driver in the cab ride to the hunting grounds, then see ya!!
I don't know the history or the pedigree, German lines, or American(GWP) lines, but for the most part they are great family dogs, they need lots of exercise, a crate to sleep in(as their safe place), and always, always, let them know where they are on the "totem" pole(they will always test the waters), ie, below the wife, below the kids, and if you have a cat, below that particular cat, or you will come home one day with your dog presenting you with that dirty little furball that he is protecting you from(if you know what I mean).
Go do a search for VDD group north america, see if you can find an Armbruster training manual. Or go to Versatiledogs.com and find out some other good books for versatile dogs. I rarely visit that site, too much chest pounding, and my dog breed is better than your dog breed. But its good to lurk I guess.