My CPU and GPU have not gotten over 50 degrees while under pressure.
GPU works at 33 degrees when its barely doing anything, and reaches about 49 when its maxed out.
CPU seems to be working at 38 - 47 degrees so far.
Uses a 140mm fan at the back to suck air out. A BitFenix Spectre Pro 230mm fan at the front. GPU has Asus-packaged DirectCU fan / casing, its a HD 7770 GHz. CPU is an i5 3570 (non k) and uses stock cooler.
Asus P8Z77-I deluxe mini-itx motherboard runs at 29-33 degrees.
As far as my room temperature goes, its been between 26 - 30 degrees here.
Point is, don't buy any major cooling unless you really need it.