I'm moving on up to an IR-12. I've used this roaster for about a year and a half. I bought it used from Jon Ferguson of Cultiva Coffee in Lincoln, Nebraska.
The roaster is housed in a custom constructed roast "hut" 12' x 8' with AC and all electrical and gas installed. (you'd need to add a meter for you location).
Roaster, Catalytic Oxidizer, Positive Pressure Exhaust Stack