Decided to build a two vessel system as I have kettles, ball valves..etc to use and am handy with a welder to fashion a cart to my needs. Have a few questions. First of all is temp control. I only have 120 and was going to get the BoilCoil (5 gallon batches only). Units such as EZBoil would fit the bill? I can't find much into on what a PID or SSR is or what, and prefer not to build an electronic box itself. In contrast to Blichmann I'd put the temp for MT/LT at the output of the kettle rather than the pump. Also, is there some type of a float switch that will turn off the pump if the BK is about to run dry? I think Blichmann has one but can't find one and how to integrate it. Any help on the electronic end is appreciated. I would like to be able to mash, boil, step up temps. Would prefer to program it but manual is fine too if it's a difference of many hundreds of dollars.