Welcome to the forums, newcomer!
What are the makes and model of the fans you want to work with? If they're all WM, just pick up a PWM fan hub similar to this;
The new MasterFan ARGB and PWM HUB is capable of connecting up to 6 sets of Addressable RGB (3-pin) headers and PWM headers simultaneously. It enables users to expand cooling capability and enjoy greater system performance. Its small and compact design allows you to control your PWM ARGB fans...
www.coolermaster.com
and you can use one header on the motherboard to manage all your fans in your build/case.