My Royal #4 is set up for roasting with LP gas and modern valves electronic ignition PID controls it is in SW FL. I know it can be used for coffee, peanuts, and cocoa.
It has been rebuilt and has considerable cost so it is likely out of your price range.
You can find a way to assist Coffee Shop owners and provide barista jams and other helpful ways to do card processing menu development, employee management and different topics that the Coffee Shop owners. Teach Latte Art class and give something to the owner to get them to connect with you
I have a moderized Royal #4 I would sell. It has been modernize with new gas, thermal couples, probes, and controls.. I had sold it several years ago and was never paid for it so they want me to pick it up now in the Houston area.
I have rebuilt a Royal # 4 & 5 with modern gas valves and controls. I have just been told ro pick it up in the Houston area. Do you still have your Royal #4?