Hi Alan,
Great article on using the grid spot on a handheld flash. I've done similar stuff with a flash on a stand, but never thought of using a wireless trigger for the camera. That would certainly save a lot of time adjusting the stand and walking back and forth to the camera.
What are you using to fire the camera and flash, pocketwizards? If you were doing everything with wizards, I guess you'd need at least four, a receiver on the flash, a transmitter on the hotshoe, a receiver to trigger the shutter, and a transmitter in your hand.
I was also wondering if you considered using something like the
HonlPhoto Speed Grid for Portable Flash, rather than making your own? I think they might be cheaper than the parts for your DIY version.
Cheers,
Andrew