The only thing I'm really concerned about is the heat. Their guys accustomed to it, "our" guys are not. That being said, in an environment that dry, once the sun goes down the temperatures usually come down pretty quick. It could be 95 when the game starts and in the low 80's at games end. Not really worried about the crowd either; Arizona's stadium is barely bigger than Jack Trice, and it sounds like at 10,000 Iowa fans will be in the house. Their crowd really shouldn't be an issue, as Iowa has gone into places far more hostile and walked out victorious.
Really, if Iowa plays their game, it should be a fairly comfortable win.