Looks pretty good to me. Either power supply should be plenty unless you go SLI. The Arctic Cooing freezer pro is a good CPU cooler for the price, and the 8400 runs so cool you should be able to oc to 3.6 without a problem with it.
+1 for the Freezer. The other two are much more expensive and total overkill for "might OC it a bit".
You won't do SLI with that mobo, so yeah either PSU is fine. I'd get the 600W, it gives more room for upgrades.
That HDD's price per GB is way too high IMO. The WD3200AAKS is only a few bucks more, twice the size, and a denser platter (i.e. better for dealing with large files).
http://www.memoryexpress.com/Produ [...] 4(ME).aspx
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