RIMs set-up

I am looking to assemble parts for a RIMs system. I am thinking of using a 120V/1500 watt low density element (plumbingsupply.com) powered by 120 V from a Johnson Controls A419ABC-1c controller. Any comments or suggestions regarding this set-up's viability would be appreciated since I am unexperienced about electric components and thier installation. Also any comments on what other people are using would also be helpful.
BTW - are stainless elements a must? If so, suggestions would be great. Thanks all. Cheers!

You'd do better posting this in the DIY forum....

OH - thanks!