Summer Water Temp Baseline?

slantsixdan recommends a 180 thermostat in a '61 radiator/cooling system

To keep this thread going, I have been playing w/ diff. fan configurations the last couple of weeks. I,ve had a 17" 6 blade steel factory fan / belt driven, a dual 14" elec. fan set up, a 17" 10,000 rpm flexfan, and a custom cut 10,000 rpm 17 1/4" flexfan. All the fans were bet driven, except the dual elec fans. There were not much diff. between them, the dual elec was probably the worst, (thinking the thin shroud was the big problem here) , the custom cut flexfan was probably the next best, the steel factory fan might be the best. I am thinking about a diff. water pump and thermostat now, both hi flow. I am not having real big problem but would like to run around 195-200 in the terrible heat we had yesterday.
my 505" WEDGE IS GUESTIMATED AT 723 H.P., alumheaded, w/ a 28x19 crossflow rad. , two rows of 1 1/4" tubes , that was (supposedly) guaranteed to cool 800 h.p. All fans have been in a shroud .
ARE THE FLOW COOLER OR MILODON WATER PUMPS WORTH THE money ? How about the best 180* thermostaty out there ??
------------------------ALL SUGGESTIONS APPRECIATED !!!!!!!!!!!