sifu.. newBie here and trying to overclock n wanna ask is my following item is ready for OC??

Proc : Intel Core2 Quad Q9400 @2.66Ghz
Cooler : CM V8
Mobo : Asus P5Q SE plus
Ram : 2x Corsair Gaming Ram DDR2 2gb
Gpu : Sapphire HD5770 FleX
Psu : CM Real Power
Chassis : CM Haf 922, with all stock fan

should i get anymore add on to make my cpu cooler like ram cooler or additional fans? & anymore u wanna know bout my rig?? just need some opinion n advise.. million thanks