As Sal states, he's trying to simulate a commercial wood fired oven. The other methods posted will often produce a good pizza, but will not produce a pizza with the taste or consistency of a wood fired oven--they simply do not produce enough heat.
I'd try a Weber kettle attachment before dropping thousands--it's a at least conceptually correct, bringing you to 900 degrees or so:
https://www.amazon.com/KettlePizza-P...gateway&sr=8-5