In my opinion he doesn't need 2 dogs. One dog should be more than enough. The problem is that most dogs that protect are generally not considered to be the best dog for inexperienced pet owners. Based upon your description he would do well to open up his budget for one dog and to have training for this dog. Basically this will cost more than what his budget is for 2 dogs. Training alone might cost $1500 and upwards. Often a dog from a ethical breeder will be over $1500. Shipping might be over $300.