Yep, I cook my chicken on the Weber kettle around 400 degrees. HOT HOT HOT for chicken!
You really don't even need the coal holders, just pile it up on one side, put the meat on the other. There's really no reason to put the meat in the middle and coals on each side...coals on one side works just fine.
For me, a chimney filled with Kingsford blue to the top row of holes, lit and mostly white before I dump them, will run right around 400 with my vents wide open.