Run electric fans all the time?

I'm certainly willing to try a faster WP speed since that is relatively easy to do (compared to a new radiator), although I'm a bit wary of 30 or 40% overdrive... Not worried about throwing the belt, but of cavitation in the pump.

Today I've been searching for a pair of single-groove pulleys with faster than 0.95 ratio, but haven't been able to find anything either aftermarket or "pre-owned". The new ones are all "performance ratio" which is the exact opposite of what I'm looking for...