To the person that felt like the 5830s were subpar parts... that is because they are. (The 5870s are the "5% of the best," the 5850s are the "mainstream," and the 5830s are the "bad, but will work" chips.)
As for the overall build, I am yet another builder that would have gone for a single 5850 or 2x 5770s in the build instead of 2x 5830s. Crossfire's ability to increase fps is not as "steady" as that of SLI, and relying on 5830s to potentially overclock...
I would have kept the Crossfire capable system board, even in a build with a single 5850. Why? The ability in the future to add a 2nd card and Crossfire. (And, if 2 5770s had been chosen, you would have needed it anyway.)
The extra money saved from the reduction in graphics muscle could have been spent on a decent hard drive (WD Blues are good for data storage, but that is about it.) Maybe a single or dual platter WD Black or Samsung Spinpoint in the 500 GB or 1 TB range. (Depending on whether you spent the money with the idea of a media user or a pure gamer.)
As for the CPU choice, I rather liked it. However, I would have also liked to have seen what the overclock would have been without unlocking the 4th core. (I have used Athlon x3s in my past two builds, thus... I love the chips. However, I never unlock the cores since I use GB boards... which don't offer the option anymore.) Your own testing many months ago showed that you did not get the same linear gain going from a x3 to a x4 as you did from a x2 to a x3. (And, most gamers know to not run any aggressive programs except "the game" while they play. Thus, this makes the 4th core of a gaming system nearly pointless.) Speed in this case would have been better than 4 cores.
In short, a $1k build from me would have been:
1. Phenom x3 720 BE
2. Crossfire capable system board. (Potentially a 890 series for USB3 and Sata3 if could fit in budget.)
3. Same ram.
4. 1 500GB or 1 TB "good mechanical" hard drive. (Note: Not a Seagate.)
5. Same case.
6. Same cooler.
7. 2 x 5770 or 1 x 5850, with a strong leaning to the 5850 for future upgradability.