Seems like a pretty specific mix to be looking for others with the same thing...
Which breed traits are you seeing dominant?
I would think they all have good protection/guard dog tendencies. I'd approach training him as I would any other independent guardian breed... positive motivations, high value treats, no physical punishments.
Those are all smart breeds - i.e. they'll know what you're thinking before you do, so think good thoughts to get good reactions!
My puppy mantra: You get out of the dog what you put into the puppy.
So, I try to put in generosity, love, understanding, loyalty and praise, all within a framework of consistent, fair rules.
Do you have any pictures you could share??
Puppy pictures are ALWAYS welcome here!!
Happy New Year!