Run electric fans all the time?

The only factory pulley setup (from Bouchillon) I can find that will work is:

4-groove crank pulley (outer 2 grooves are 7") BPE4013
2-groove WP pulley (5-7/8") BPE4016
(and would have to relocate the alternator forwards to line up with the third groove).
But that gives a 7/5.875 = 1.19:1 ratio which might work.

I could make a spacer to relocate my existing 2-groove (or buy a single-groove) crank pulley forwards to line up with the 5-7/8" 2-groove WP pulley. Still have to space the alternator, too.
Stock crank groove is 6-9/16", resulting in 6.5625/5.875 = 1.12:1, maybe even better for my application.

Thoughts? ;)