It sounds like he could use more exercise and a little dose of NILIF (nothing in life is free) as he thinks he's the boss of you. It is harder with little kids in the house, for sure. Bit you can do it. Get the kids involved like they are helpers, and show them how they can help you make Cooper a good boy. They'll probably love it. :-)
My pup is 11 months and he didn't do any of those things. Sorry. He did have a hard time listening between 7-9 months and was easily distracted, which is typical.