I'm probably coming in late, but I would cancel and rethink the whole thing. First off a rott/gsd isn't an LGD. It comes from breeds with the potential to have a lot of play/prey drive. Do the people who have the dog know what to look for in an LGD? I doubt it. Even within LGD breeds you need to know how to evaluate the pups. Some will be good for certain stock, some with other types. Some not at all.
Besides that, with the conflict of opinions on how to raise the dog it is more fair to the do to wait until you can agree than to get it and have people doing opposing things and confusing it and setting it up for failure.
Besides that, with the conflict of opinions on how to raise the dog it is more fair to the do to wait until you can agree than to get it and have people doing opposing things and confusing it and setting it up for failure.