Ok, where does snacks fit into all this?
Another idea is to have game time last, so they are ready to sleep and not hyped up on whatever the snack was on their way home.
Last year I had 2 3 year old boys in my cubbies class whom I thought wasn't ready for Cubbies at first, but settled into it. Until, the boys who cant sit still learn to settle down, how about a long period of Games to kill their energy before and after lesson (since I see you do games first). If the game area is rotated around, and that's the slot you get, you can always do the games suggested in the lesson plan later or get a beachball and play soccer, basketball, foot ball, etc.

Sparky leader for the AWESOME 1ST GRADE RED TEAM SPARKS!!!!!!!!
Citation 08
http://biblelessonslearned.blogspot.com/
"that's a really old.. CAR!!!!!!!!!!!!"