I have a similar build going with the x6 1055t.
I use the antec 300 case ( look into it ) and a coolermaster hyper 212 plus which is arguably the best bang for the buck cpu heatsink.
Processor idles 23c and 29c at full load oc'd to 3.6ghz
Antec 300 case has a 140mm and 120mm x2 exhaust, and 120mm x2 intake fans, plenty of cooling and quiet too.
Find a psu that's on sale, that one you got is pretty expensive.
and like manic! Mentioned, always use shopbot.ca to price match.
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