Hi, currently in my mind as below:

CPU: Intel Core i7 4790k 4GHz RM1159
MOBO: Asrock Z97 Extreme4 RM579 or Z97X Fatal!ty KILLER RM599 or Gigabyte Z97X Gaming 5 motherboard - RM559?
SSD: Intel 530 240GB SSD - RM 479
HDD: WD Blue (WD10EZEX) - RM 189
RAM: Kingston Value RAM 8GB DDR3 1600Mhz RM244
ODD: REUSE PIONEER DWD-RW
CHASIS: ??
PSU: Seasonic X-650 RM529 / Seasonic M12 II Evo 620W power supply - RM359
LCD: REUSE DELL U2312HM
COOLER: Coolermaster Hyper 212X - RM149
GPU: GTX970

a) Which motherboard is preferrable? Why?
b) Do i need to get those like GSkill Ram or other?
c) Do i need the Seasonic X-650 instead of Seasonic M12 II Evo 620W?
d) Is Coolermaster Hyper 212X silent enough and support if i overclock?
e) Can recommend me a chasis? Prefer to be solid and silent.
f) Do i need fans for extra cooling? If yes, what to add, as mentioned, prefer to be silent.