A verify impressive first post indeed.
I didn't have 9 gigabit switches lying around, so I used a simulator. Instead of using 1000 for the links, I used 100, and then lowered the connection betwen SW1 and SW2 to 10. I also assigned the priorities of 16384 to SW3 (your root switch), and then set the others progressively higher, so that the bridge ID would be progressively worse for the higher switches.
The images are zipped and attached.