you aren't gonna notice much no matter what you do to the 4 banger, i'd gear it and thats it.
the electric fans are fine though, but don't do what some people do and just wire it to a switch, the switch gets left on, which it shouldn't be on all the time. the engine is designed to operate around 210 degrees, or it gets forgotten and does damage.
it takes time to dial in a thermostatic switch, but i'd say put one in, don't just do the manual switch.
i've done it on some trucks but i had the fans laying around out of other vehicles, so i wired in the fans for almost free. if its gonna cost a few hundred bux i'd just put a new fan clutch in it. just me though.