Then I would take the following build ($850 without the PSU and case) and make some modifications:
http://forums.anandtech.com/showthread.php?t=2192841
Add a nice keyboard (+$50-100)
Increase the size of the SSD to 200-250GB (+$70-90)
Buy a Windows License (+80-100)
Buy speakers/headset if you need them (+$30-???)
Buy an aftermarket cooler in order to overclock or reduce noise (+$30-70)
Increase the hard drive size if you believe you have a use for more than 1TB (+$30-70)
Optionally, buy yourself a nicer case than the 900 (+80-150)
In reality though, there's no point in choosing specific parts right now. Those games are a month away or more. Better to build at the end of August at the earliest, so any specific parts we recommend now might not be the best choices at that point.