I am a commercial fisherman and have been building an insulated stainless steel commercial smoker for smoking some fish for retail. The cooking space in my smoker is approx. 4ftx2ftx5ft. I am wondering if 2 1200 watt 120v elements would be good enough to heat up this box? I only smoke my fish at about 200 degrees. The issue is I only have access to a 20 amp plug. Is there a good supplier for elements online I can order from? Also, is there a cheap way to get good size cooking racks as my smoker should hold around 50 22x26 in racks.