grit, absolutely on the "German Shedder" I don't think I own anything that doesn't have dog hair in it, on it, or around it!
Really, I can't stress it enough - research research research.
Check local breed restrictions and your homeowners insurance. Some companies won't cover you if there is a GSD on the property. Find a good vet that is used to working with GSDs - many people are afraid of them and that includes vets. Find a trainer used to working with GSDs. Make friends with people who own GSDs because a lot of owners are going to be intimidated by the way GSDs like to play.
Meet dogs of all the different lines. Color isn't the most important factor, but there is nothing wrong with having a preference. If you like black dogs or sable and that is what you want, then you want to focus on breeders of working line dogs because that is where you will find those colors. Or if you like the black & red, then German Show is going to be what you look for. It's a good criteria for narrowing down your search. Of course, then you have to interview breeders. Hips are a must for any shepherd. You'll also want to know that the generations before your dog have strong nerves.
They are a lot of work, but well worth it. I have no doubt that my boys would give their lives to protect the family. They are obedient, super intelligent and my babies
If you don't stay 2 steps ahead, though, they will definitely out-think you! They will invent new and exciting ways of getting in trouble, so give them a job.
Also, they require exercise. My youngest gets at least a couple hours a day of full-out run and play time. Plus obedience and conformation practice. Then Tuesdays we have obedience/rally practice and weekends we go hiking. That BARELY keeps him contained and I'm sure that he could do more. Any less than this and he would be chewing holes in the wall and rearranging the furniture.