Grand Canyon Rim-to-Rim-to-Rim, Take Two

We're planning another Grand Canyon rim-to-rim-to-rim for October '09. And you are invited. You have a full 10+ months to prepare, but don't hesitate - start your training now.
See that picture? Click on it. The *entire* hike just involves scurrying on over to that opposite wall, and then coming right back. Easy enough.
So, tell me that you want to go so that we can reserve ample camp site space.