I'm not the one to dissect pedigrees(more here are knowledgeable than I).
But I can tell you, I have had gsd's my entire life, ddr mostly, this girlie Masi, is a 'wild thing" LOL,,she is much higher energy than my previous dogs, which is fine by me, She's ready and raring to go and do anything I throw in front of her.
The first couple of years I thought, my gosh, this dog is wearing me out LOL, but as she matured around the 2 yr mark, she has developed a much better off switch.
She's alot of fun and DOES keep me moving, and yes Masi likes to still at times, jump straight up in my face
I think you'll have alot of fun with your girl , mine has been a blast to train, she is eager and willing, and I think 'easier' to train because of that energy and willingness.