I don't have a lot to say about your specific build. Just a couple comments related to things I've seen in other responses.
I've never had a problem with G.Skill RAM and I've used it in 2 laptops and three or four desktop builds. They're fine, and I get pretty annoyed when people say "X" brand sucks based on hearsay, especially without any reference articles.
Anyhow, my other comment is that although I am a major AMD fan and my primary system is a Phenom II x6, if high-end emulation is one of your main goals for the system, stick with Intel.
This is based off the fact that I have seen distinctly better performance with the PS2 emulator PCSX2 and this emulator's GPU plugins have variants for SSE2, SSE3, and SSE4.1: SSE3 & SSE4.1 not supported by AMD processors. (AMD's Phenoms do have support for SSE3 and SSE4a, but SSE3 plugin didn't work on any of my AMD systems, and SSE4.1 is
not SSE4a).
Even before I was aware of that or the ability in recent builds of PCSX2 to utilize more than 2 cores/threads, I knew that no AMD CPU's offer
hyper-threading. Not really necessary for me to go into more detail with that.
my other comments are agreement with some others have left:
- get a really good PSU (you should be able to find a "really good" one in the $70-$100 range).
- consider lower end graphics until the next generation since you can't afford a really high end one right now.
- or wait until black friday deals roll along for certain components. this i would especially recommend because the change to your budget offered by waiting may even permit you to get an SSD in the system.
also, keep an eye on newegg's promos regarding cases going on sale.
Antec, Thermaltake, Lian-Li, and NZXT occasionally have offerings in the $40-75 range with free or very low-cost shipping.
I have personally worked with Lian-Li and Antec cases with much pleasure compared to other systems. I almost always wound up with cuts on my fingers when I went with unfamiliar brands. And Antec/Lian-Li always included enough fans for any basic system that isn't intended to be overclocked right from the start.