fan temps

I have a 69 valiant with a 408 stroker with aluminum heads, 727, aluminum rad, and I installed the ford contour/mercury mystique fans with a dakota digital controller. What are ppl running for a t stat and on off temps for the dual fans? I'm thinking a 180 t stat, low on around 210, off at 190, hi on around 220, off at 210. Am I close?

thanks