Case fans: What size should I use and also what should I use to attach them all?

[Stevoisboss]

I want to put some new case fans on my build(not because it matters just because it looks cooler<----best pun ever) This is my computer: http://pcpartpicker.com/user/stevoisboss/saved/. I wanted to put 5 fans on it and I was wondering what size would look best dual 120mm or dual 140mm. Also I don't know how I would attach them since i only have 2 fan headers on my mobo. I was thinking of something like this: http://www.newegg.com/Product/Product.aspx?Item=N82E16812162026 but im looking for recommendations on what I should do. Finally I want good looking blue led fans so I was leaning towards the ones by Corsair, so tell me what u think. All help is appreciated and thanks in advance because im clueless when it comes to fans.

[manikyath]

i generally just wire my case fans up straight to the 5 volts rail.

[WoodenMarker]

Were you planning to replace the heatsink fan?

If you just wanted better looking case fans, a decent front intake and rear exhaust should already be plenty. 

[Stevoisboss]

no I wasn't