Looking For Airflow Help

[PorscheBurrito]

I have my build completely thought out, except for case fans and airflow, so I'm only looking for advice on airflow through my system. Here's my parts: http://pcpartpicker.com/p/6kxL3C

The case comes with two Fractal Design Dynamic GP14 140mm fans included. This rig is meant for high-end gaming (not planning on overclocking in the near future).

Do I need any more fans? If so, how many, what size, and what brand?

How should I position them? I know that airflow should go intake from bottom and front, and exhaust from top and back. I'm also confused on whether I should have positive pressure or negative pressure. I know that positive pressure has more intake than exhaust fans and prevents the most dust, while negative pressure has more exhaust than intake and increases airflow.

 

[Sav4]

Best to try it and see what your temps are like before adding more fans should be ok since your not OC
Remove any unused h/d cages to supply a unrestricted flow of air .
If you were OC adding another frt intake fan bottom intake for gpu and possibly one exhaust top would help keep it cool.