Sorry for all the trouble and heartache; my ex-wife brought home a Husky that we loved; but we lost in less then six months...it was horrible. I hope it works out for you.
In response to your title, the bloodline really matters with GSDs; I can't stress this enough both with temperament and health. The imported German bloodlines cost a lot more, but it is completely worth it. My GSD Amber is 10.5 years old. If you spent time and played with her, you would guess she was 4-5 years old at most; she runs and jumps like dogs half her age. Other then routine check-ups and shots, I haven't spent anything on illness. She came from OFA rated excellent dogs; I don't think she even has any arthritis yet.