looks like good specs.
What are your uses? I'd watch the wireless stuff if you are heavily into gaming where time is critical.
The retail fan will run a little warm for my taste, but as long as you are not planning to oc it will be fine.
The 300Wpsu is around the minimum for your config. Any expansion of HDDs or other drves etc. amy see you drawing the limit out of it, especially if it is not brand. I'm currently a big fan of the enermax 451 supplies - not too costly and loads of juice. A PSU that is not fully loaded will give more stable voltages generally.
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