Should be fine. You want the fans to kick on a little higher than your thermostat rating and shut off just below. Ive seen some take and actually have the shut off at say 200 for a 195 thermostat and the turn on at 215 that way going down the road will shut the fans off. Ive personally aways seen people go below the thermostat setting as you really dont want the fans cycling on and off especially if you are in traffic youd only want them to go off if you are going down the road.
"Old Blue" - '56 Fairlane Town Sedan - 292-4V, Ford-O-Matic transmission, 3.22:1
'63 Belair 2dr sdn - 283-4V, Powerglide transmission, 4.56:1
'78 Cougar XR7 - 351-2V, FMX transmission, 2.75:1 9inch
"Bruno" - '82 F150 Flareside - 302-2V, C6 transmission, 2.75:1 9inch, 31x10.50-15 BFG KO2