The final product.
3 year old Dash did a great job helping me setup for the shoot. He positioned light and background stands, taped down the seamless, positioned the stool and encouraged his classmates. He wasn't too interested in sitting for a portrait after all that, but I managed to get this one.
Nikon D3 with 50mm f/1.8 Nikkor @ f/6.3.
Grey seamless paper background.
SB-600 on Manual @ 1/4 power camera left through Lumiquest softbox as key.
SB-600 on Manual @ 1/8 power camera right through partially scrimmed shoot-through umbrella.
A green gelled SB-R200 Manual @ 1/2 power behind the subject firing through a cardboard cookaloris with random shapes cut out of it.
Triggered by SB-800 in commander mode on D3.