I'm not sure about the PSU, one way or another. The few reviews of Fractal Design PSUs I found were all good, although for a single HD7950, a 550W PSU would be enough.
The vanilla Samsung 840 has somewhat slow [write] performance; HardOCP dinged it pretty hard in their review. The 840 EVO or 840 PRO would be better choices.
You're wasting a little money on an inferior CPU cooler. That isn't saying it is bad, but it is inferior to the less well known Xigmatek Gaia, which costs less:
http://www.techreaction.net/2011/07/07/review-xigmatek-gaia-sd1283/7/
http://www.techreaction.net/2011/11/27/review-cooler-master-hyper-212-plus/4/
Unlike the Hyper212 EVO (ignore the URL; it IS the EVO they tested), the Gaia never throttled, although it wasn't always the coolest depending on the fan used. Both got awards, but if you factor in the price, the Gaia wins hands down. I use them on my systems, and they work well.