....A guy we're great friends with is going to help train the dog since he's getting one from the same litter, He's Ex K9 and has been training dogs for years
I used to train shutzhund sport with my Rotty. Most "Ex-K9" guys and a lot of Shutzhund and Protection trainers employ Koelher Method. Years ago I used that style too, before I became enlightened.
BEFORE you let anyone touch that puppy be sure you understand the whys & how's of what's going to happen. Google Koehler Method of Dog Training and see what Bill Koehler is about, then compare to Dr. Ian Dunbar's Sirius method.
It's 100% easier to no create a phobia or training issue that it is to fix it latter.
Bill's concept is the dog work out of Fear of punishment, Ian's idea is the dog works because it wants to get a reward.
All the clients problems I get payed to fix are either a result of Koehler training ideas or people that just allow the dog to have no structure at all. Finally, Please don't let anyone try to talk you into putting a prong or shock collar on a puppy.
You're welcome to PM anytime.
Best of Luck with your new pup!