1) I think two coaches per mat but thats it
2) No, I think its ok the way that is
3) No, this is fine the way it is, no matter what you have someone is going to be the oldest and someone is going to be the youngest might as well keep it the same all year instead of wrestling younger kids then going to older kids right before sub.
4) No way, as a coach this would take way to long and it would extend the day way to long if you ask me.
5) In 6&under most the time any way all they do is stand up and go after each other its not really much about the moves