I get to pick up my new Boxer Tyson (I know he is probably the 1 millionth boxer with that name....LOL) on Jan 5th so i've been doing some shopping to prepare for his arrival. He isn't our only dog so i've got the basics down but i'm stumped on what size cage to get. I know i'm going to get one with the divider that you can adjust as he gets older but what size would be good for him when he is full grown. I don't plan on keeping him in his cage once he is fully trained *as long as he can behave himself while we're at work* Any help would be greatly appreciated!!!!!