If you're interested in controlling your fans the proper way and pretty much every avid watercooler must have a fan controller in their arsenal so yeah you should be getting a fan controller.
Some choices are:
Lamptron(I use the FC-5 v2)
NZXT Sentry
Fractal Adjust 108
G-Vans to name a few
and if your'e looking towrads splitters
EK, Phobya, Swiftech make them though the most solid direction to take if going the splitter route alone(and not getting a fan controller due to cost cutting and fear of the cables) would be the
Swiftech PWM splitter
For a guide on what sort of a radiator to choose, I'd suggest reading up on the watecooling sticky which is located in my sig, for a better understanding of TDp but if you're asking around for brands:
Aquacomputer's Airplex Modularity System
XSPC's EX, RX, RS
EK's PE, XE
Alphacool's Nexxos
are some of the rads you can look forward to. Regarding your build, I'd be OCD and get as much EVGA components as possible
but a nice build nevertheless!