Allen,
There are so many great places to shoot in this part of the country.. Jimmy D listed many in his post "A Perch with a view - Grand Canyon" in this same forum. You should look at his list. To add to his list, do not forget about White Sands National Monument in NM, and the Superstitions Mountains, Saguaro National Park and the Chiricahua National Monument in Arizona (http://www.nps.gov/chir/).
You asked about flowers. This is a banner year but it is getting late. The link below will take you to the Arizona State Parks "Wildflower Ranger cam". This site is where the Rangers keep everyone updated on the flowers in the Arizona state parks.
http://www.azstateparks.com/Parks/park_info/rangercam.htmlHave fun
