wiring Ford Taurus 3.8L fan questions

[BustedS13]

would it make sense to wire the low speed of the taurus fan to both the low and high speed relays, since it already flows, what, 2500 CFM, and the high speed draws about 50 amps? or should i just wire up the low speed and put nothing on the high speed?

when the factory high speed relay kicks on, does it turn off the low speed relay? because if it does, then i feel that leaving the fan's low speed wired to both low and high makes sense. if it doesn't, then i'll just leave it wired to only the low speed relay, leave the high speed relay disconnected, and then wire the high fan speed to a new circuit that i'll just slap together in case i ever need it.