Altima fan - One fan or two.. low or high?

[Blues13]

Okay, I searched and it's not about wiring!! Well sort of..

Setup: S13 Sr20det, FMIC, AC, bolts-ons.. koyo copper rad and altima fan.

I am able to have the fans come on at two different temperature setting using a fan controller.

Question is, which is a better setup:

A. Better to have both the fans go on low when it hits the first setting and both fans on high when it hits the second temp setting?

B. One fan on low on first setting and the other off, two fans on high on the second setting.

C. One High the other off first setting, both fans high second setting.

D. Any other combinations you can think of..

Reason why I'm asking this is because I want to put as little drain on the alternator/battery/electrical system as necessary.. but want sufficient cooling.

Also at what temps would you set the fans to turn on? Such as 174 for low, 186 for high?

I've driven without the fans on at all and it will be under the normal operating temps unless you're idling for quite a bit or the AC is on.

Car will be street driven, tracked occasionally. THanks.