There is no possible way you could go wrong with section 109. Your seats will be on the 50 yard line and immediately behind the Cardinals bench; need I say more?

These tickets will run you $200+ per ticket but getting a hold of them is going to be much easier than what you will find in other NFL stadiums because there are so many rows in each lower level section here.
The stairs are not steep but you will have to climb plenty of them to get to the concessions if you're seats are in the first ten rows so plan those trips strategically if you don't want to miss any of the game.