Are you taking him to a SchH club now? If not, I'd recommend that. I second that if he's outside most of the time, he's not learning how to behave inside. He needs more exercise, both mental and physical. I'd put breeding right out of your mind right now. You're on your way to having an out of control dog.
Wrath of Grim z Dragon
"Mr. Grim"- Threaten my handler. I dare you.