Update.... Have several of my controls now. I've been getting it layed out so I can begin drawer up a schematic. So far what I have together is working.
I've got a 110v to 24v step down t-former out to a relay. (i have a temporary relay on it for the time, just in case things went south. Today I will swap it out with my two pole good two pole. I have the NO wet switch wired between the wifi stat and relay that will activate the element once the water is above the element. I do not have the flow meter that will go between the stat and relay yet.
Today, I will wire the second relay up the same way for the boil kettle.
I did have one mishap when wiring the NC wet switch. It was getting late and i my infinite wisdom, I wired it to the R terminal on the stat instead of the G. Soon as I put power to it, I let the smoke out. Oh well. a small sacrifice.