Thanks! Yeah, that PSU you linked is pretty sweet -- I like Corsair's V2 iteration of the TX and CX units, especially since Corsair utilizes SeaSonic components in their better units.
Now that I think on it, that PSU may actually be a better buy for this build. I recommended the Eco because it's got slightly higher wattage, but honestly, I don't think Langlois will need that much output for this build, so that $15 difference from the Corsair unit could help them achieve their purchase even sooner.
That case is one of the ones I've recommended a couple of times to friends because it looks sexy, it performs well -- aluminum, *BLEEP* yeah - and it's a really awesome buy for that price (even for just $10 off as it is). I also happen to like top-mounted PSUs, but that may be personal preference since my case rests on the bottom shelf of my computer desk so dust tends to happen. ;|
Good idea on the 560 or 6870. If the OP really can't go over budget, I know for a fact that I run every last game they mentioned on maxed setting on a single GTX 460 768MB; aside from BF3, which I know that they'll still be able to run since IIRC the RECOMMENDED GPU is a single GTX 460, which is not the even minimum.