Sounds like you are starting to find some outlets for all his mental and physical energy. We are loaded up this fall with after school activities, and I figured we'd have to probably cut something back. But (and this is very tentative) something seems to be clicking. DS is less grumpy now we're into week 3 of our hectic schedule. He has no time to dilly-dally with the homework, and just hits it hard and gets it done. My ds is not at your son's level so we surely have an easier time in general, but he dances and takes tae kwon do...and we just signed him up for one of the dance school's productions. I think so far these things are helping (all his choices).
I am expecting to hit a wall at some point, but I am going to see how things go. Best of luck to you in your pursuit of happiness or at least balance.
