jmac,
I am Bill Norton "AZbronco", I live in the North Valley year round. I see you split your time between Wyoming and Arizona, what part of the year do you get to zona? PM me if you want to chase some birds when you are in town.
Finding areas to run the dogs will not be a problem as the majority of the land in Arizona is state land and open to public access. As mentioned above, snakes should not be much of a problem at that time of the year.
This is also quail season so get the dogs out hunting. I would be glad to help...