In regards to training methods, my CsV is very food AND toy motivated but I would say food would be number one, especially for a 'high value' treat, such as meat or cheese, you will have their rapt attention. [Though I just taught my 5 year old male 'high five' in about 30 seconds for one lousy Milkbone so anythings possible lol.] And he does LOVE a good squeaky toy!!
My GSD was wayyy more toy motivated though, she would do anything for her tennis ball or stick and would do what I asked of her for a treat as well but then wouldn't even take the treat [or take it an spit it out lol.] Wolfdogs want the reward more than the sheer pleasure of satisfying you I think.
They're a very intelligent and energetic [and awesome] breed and I think they would excel in Schutzhund or any job you give them.
Good luck with your wolfdog dreams!!