The PSU doesn't blow into the case, it takes air from inside the case and expels it out of the back.
You shouldn't be looking to overclock with that motherboard, the Bulldozer will destroy it in no time.
The XFX Pro 550W or 650W is a good choice from a price/performance perspective. A replacement PSU is highly advisable, the CiT is not a good unit. Even if you don't have that exact unit, it won't be good quality if it came bundled with that case, for that price.