dont you speak to your dad? ask him he's been running sal x's for 30yrs
but heres my take on it, take your time make sure he's got his manner's
it's not just about exercising a dog, give it stimulation, make sure he's your mate
nothing worse than a dog that wont listen to you no matter what the breed
dont over face him he may look big and strong, but might not be mature in the head
give him easy runs, it'll all klick into place
good luck