lakebilly,
My recollection when I last examined the bakeware at Walmart's is that they sell pizza pans that are darker than the shiny aluminum pan you mentioned which, unfortunately, cannot be seasoned that much on short notice. It will also not do a great job because it will reflect heat rather than absorb it and you are likely to end up with a whitish bottom crust. If you can find a pan at Walmart that has one of the newer, darker coatings that can tolerate fairly high oven temperatures, that would be my personal choice over the cheaper nonstick coated pans that are often oven safe to only about 450 degrees F. If the shiny aluminum pan (or some other inexpensive pan) is the only option, you could use it in combination with your pizza stone. For example, you can place the pizza stone on the lowermost oven rack position and preheat it at the desired temperature for the specified time, dress the pizza on the pan and place it at an upper oven rack position and, once the crust sets up and develops color, slip the pizza off of the pan onto the preheated stone to finish baking.
Peter