You do not need the clutch fan. Remove it and your ride will feel a little peppier and you'll have one less thing to worry about. Your auxiliary fan will suffice...it comes on at 2 speeds, low or high, depending on the temperature that is sensed via the sensor connected on the right of the rad.
You can test this out by driving for a few days with the fan restrained by a thin rope tied to one blade and the intake manifold.
Eventually, you'll need to change the resistor on your auxiliary fan as well, especially considering that you're using it for primary cooling. There is a newer, more modern solid-state resistor that is better than oem. Purchase that instead of the old spring-type version.