Large BGE - can you cook 2 large pizza simultaneously?

2 pizza questions for my extended BGE family --- 1. I'd like to cook 2 good sized pizzas simultaneously on my large BGE. I've got 1 pizza stone, a 2nd grate (not sure I'm using the right term here -- it extends 3 or 4" above the primary grate), and I have the 12-16" circular Teflon-like cooking product that I use for vegetables but could use for a 2nd pizza. With this equipment, can I, and if so, how do I cook 2 good sized pizza at once? Photos would be helpful! 2. In order to attain a very crisp crust, I find that I have to cook the crust by itself for about 6 min at 500 and then remove the crust to apply toppings and then cook for another 10 min. Is there a better way?