I just wanted comments on this. Haven't picked a HDD yet.
Get a bigger psu. The amd cards are hungry for power... I'd say at least 600w to be safe, up to 750w would be reasonable though. More is over kill for sure but less is under what you need
16gig's overkill for a gaming build (if that's what we're looking at here), corsair ram tends to be a little overpriced too.
pny xlr8 ssd is $10 cheaper (mir) with same read speed & nearly double the write
If you can live with a window on your case you can save $30 for the next week or so (until the promo runs out)
You need to add a bunch of wattage to the psu, general rule of thumb is 100-200w above the site estimate, depending on OC & how long you want it to last. Online psu calc if you want a second opinion - http://extreme.outervision.com/psucalculatorlite.jsp
Corsair don't make their own psus, seasonic are prolly the top firm in that regard. 650w is prolly a little higher than I'd go usually but it's a good deal (promo & mir) atm so...
1tb hdd, if that's the size you're after, runs to about $55 atm.
PCPartPicker part list / Price breakdown by merchant