Best t-stat for power

That might work in Ontario. But in Montana IDK

I'd use a thermostatic clutch, and a 6 blade hi-pitch fan. I'd rather have reliability.
In Montana I think I'd run a direct drive fan, and carry a new spare belt at all times. Maybe/probably water too, if I was leaving town.But I'm 62.Not interested in walking when the temp goes over 80ish. Also not interested in leaving my ride on the side of the road.