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ZStig,
I removed my engine driven fan and installed two big modo fans with dual controllers on my F-150, and ran them for nine years. If you go the fan controller route, there are some gotchas to be aware of.
1. Controller mounting point is key. Put the controller in some type of waterproof box. I went through six controllers. No matter how well you think you have it waterproofed, water always finds a way in and destroys the controller if it is not in a box. Your fan has 11 amps of draw after start. I bet it's close to 30amps for startup current. Mine were 14amps running and 30amps startup, each! With that much current, any water will destroy the controller. Sometimes in quite spectacular fashion....
When you set the temperature set points, try to sample what the ECU is reading for temp. That way you can get as close as possible to what a normal fan will start at. Plus, its more accurate than using a thermometer.
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