Essen....Looks like you have the "hot setup" there. Your pizzas look fantastic. How long did it take to cook those pizzas at 900 degrees?
It's a "hot setup", alright. It was actually a little too hot for my dough formulation (66% KABF & 33% Caputo 00 Pizza) at 900 F.
I had to let it cool down because I was afraid the bottom of the pizza would just turn into a disk of charcoal. I baked the first pizza at around 800 F but unfortunately didn't time it. I was too busy, and excited, to see the new addition at work.
If I'd had to guesstimate, I'd say it took about a minute and a half, rotating the first pie twice. The other two were baked at around 750 F, give or take a few and took about 2 mins, with a couple of rotations also. The BGE stone in the lid topped out at around 680 F, without any cracking whatsoever.
All of the pies had a nice oven spring, were crunchy on the outside with a chewy texture. The crust's edge was extremely puffy and light.
If you have a custom metal shop in your area, I honestly think you should give the plate design a shot. So far, I believe it provides extremely good air flow, is responsive to heat control via the gas tank's valve control and heats the stone very evenly.