Hey , I’m in the process of building an oven . I started with an old bank safe , it has very tight doors . I added 18 inches to the top , To make it large enough to do motorcycle frames and differential housings. It is 66″ tall 30″ wide by 28″ deep .I was wondering – can I use electric Infrared heaters mounted on each side , for a heat source ? I will insulate with Mineral Wool . Also wondering about a theromstat ? Any advice is appreciated – Thank You Bart