Cooling issues

I have a Champion 26" radiator, Ford Contour fans with a Dakota Digital controller on my 414 small block Duster. One comes on with the key, the other comes on at a set temperature. Can't remember what temp though. Stays below 200. Bought the fans thru Rock Auto.
I like the idea of coming on with the key and other at a set temp, i have them set at two different temps, one temp for thermostat and the other is at 200 i believe... but when i hammer mine it creeps a little, 210-215 range, wondering if your option is a a better idea......