figure out the pack structure between themselves, and between ryker and I? Or do i just let it play its course?
That is a receipt for disaster!
You have two unbalanced dogs both at extremes. If your going to "let them work it out..."what are you "there for?"
Mostl likely Baillif, gave his advised based on that? He can speak for himself, maybe no puppy and Adults play together straight up and that's his policy?
I'm just JQP so I got not problem in pointing out the obvious!
Leerburg site has a story about an Adult GSD snapping the head of a Beale pup, so yeah it happens!
I had a BullMastiff/Pitt Dominate Male he never met an adult dog that he did not want to push around. But...he loved puppies, I brought puppies in the house and he helped raised them, no problems ever but he was a confident dog! So yeah it can be done without issues.
But... you have to base the puppy/adult relationship on your dogs! If you have a submissive dog, that's a dog that is not sure you are there to protect her? That would be a dog under stress and now you bring in a holy terror to torment her..good luck with that!
Lecture and amateur dog physiology lecture over!
First step in fixing an issue is stopping and thinking and looking for help! You've done that, so congratulations.
You really have two dogs that you need to work with not one (my opinion) first step keep everybody safe, if the Adult dog doesn't chose to interact with the puppy, keep the puppy away.
If your up for the challenge ask questions, if your not, find a certified qualified behaviourist in your area and ask for help. Both are legitimate solutions!