Mike does run a 2200kv, but he runs on 4S. The 1700kv on 5S will give similar performance, but run even cooler and stress the batteries less. That what I think anyway. It's in the math.

Also...what runs cool for one person may not run cool for another. It also depends a lot on the temp of the environment. During winter, I can run a hotter setup witout thermal issues. When the summer hits, I really have to tame it down a bit.

I think the 2.5d on 5S would be a safe bet.