Use the T_SENSOR 2-pin connector at the bottom right of your motherboard. You need to plug a water temperature sensor into that and then you can plug your radiator fans into the PWM chassis headers and set them to react to T_SENSOR in bios.
Set the pump to a speed that suits you in terms of noise, and just leave it at that constant setting... Maybe around 1500RPM
That's how I had my Gene VIII setup before I bought an Aquaero LT6.
Maybe I adding to much onto a first time build!