[groupieindenial]

I'd put a 6' fence. I would not be tieing him out on a line, when you are not with him. That can make dogs aggressive. Its the "fight" or "flight" instinct.

The kids should not play tug of war with this dog.

Do NILIF. Nothing in life is free. Make the dog work for every bit of his food with training. OR even walks. Get a pouch fill it will his meal of kibble. Anytime he's walking beside you feed. Dog will be walking nicely in no time. The dog will quickly learn his ranks by doing this. Searh NILIF, google it.

Until the dog is settled in, I would keep him on a leash when people come over (or kenneled). You have to be ready for anything. My dog is on a leash even around 6 year olds. He is bigger then them and easily knocks them over.

Throw out the choke chain, nobody uses them anymore. They do more damage than good. You want control on a walk, get a halti.