Hi Expert Bros!

I've just bought a CM HAF XB casing (completely fell in love with it) and installed Maximus 6 Hero, 4670k i5, Asus R9 280x DCU II GPU...

It's my first time DIY and self taught from YouTube videos and reading magazines. What I need to understand is have anyone here moderately mod this casing and successfully made an absolute cooling setup.

Currently I'm using Seidon 240 with 2xPush Gentle Typhoon 120mm with rear casing stock Seidon fans (since its there so just bolt on and use) ...2x Noctua RF 8 80mm silent casing fans for under carriage exhaust.

Core temp at 34 c but 26c with air con condition
Mobo temp at 30c but 22c with air con

Are these good temps? I only could fit one side of the seidon as push pull configuration as the other side...well the Asus R9 280x is too long to fit another pull.

So i was fulling around with it by installing a Noctua NF-F14 140mm to see if I could boost the CFM that is written on the box is 115.2

What I'm trying to figure out is ...am I doing the right thing? Oh...The top cover is the window type not the mesh with 200mm fan type.

Pls help!