That sounds like a great idea! Do you happen to have any pictures of this? I'm having trouble envisioning where the L-shaped plate goes in this rigging. What is it attached to? It sounds brilliant if I can pull it off!
Todd, thanks for the advice. I will want to get the depth of the tunnel in the shot. Here are a couple pictures:
It will likely be a cloudy day, so I am worried that the mirrors might not be enough considering the diffused nature of the light source. What do you think?
Thanks again everybody!