Need advice on case fans and the like

[Duntix]

So I'm about to get the rest of my computer parts in and I have a few questions about fans. My case is the NZXT Gamma Classic, and I wil have an i3 2120 and gtx460 1gb. The case comes with a single 120mm(as an exhaust I guess?) And I feel like I need at least another fan for a push pull system. But then again I'm not planning to OC so I don't know if I'll need it. My budget is about $15 for the fans + a connector but I'm not really on what I need if I were to get it.

---------- Post added 2011-12-02 at 06:02 PM ----------

Bump so I can get some answers