Why not look into Michael's regular sidekick, Steve Kossack. He offers custom tailored photographic workshops and guiding services in the American Southwest. You can find out more information on his website located at the following URL:http://www.f-8andbethere.com
and here on the Luminous Landscape:http://www.luminous-landscape.com/about/f8nbthere.shtml
Good luck - sounds like a great trip!