Blaze's build looks good, though I would tweak it a little.
Case: That is a mid-ATX case which limits you in terms of the graphics cards you can use later on. However, if you are running only a single graphics card, or not planning on Crossfiring higher-end cards, a Mid-ATX is fine. If you want to use this case for many years and think you may later want the huge graphics cards, a Full-ATX case, like the Sunbeam Transformer IC-TR-US-BA-WOPSU
or the ENERMAX Uber Chakra ECA5001B
would be good alternatives. Remember, cases with side vents, fans, or windows will usually be louder and consider shipping costs as they can be quite high.
Motherboard: The AMD 7xx chipset series of motherboards are older and being phased out with the introduction of the 8xx chipsets. The AMD 8xx chipset series have USB 3.0 and SATA 6 built in. If you don't believe you're going to Crossfire and just want a simple motherboard with plenty of options, I suggest the MSI 870A-G54 AM3 AMD 870
or the GIGABYTE GA-870A-UD3 AM3 AMD 870
. Both of these are less expensive than the original motherboard, but lack on-board graphics which you don't need since you are going to be using a separate graphics card. At the high-end of the 8xx series, is the 890FX. For that high end chipset, I would go for the ASRock 890FX DELUXE3 AM3 AMD 890FX
which is geared towards enthusiasts, hardcore gamers, and overclockers.
Graphics card: The 9500 is not that good at all, though it is cheap. I would go for an ATI card as AMD chipsets will only Crossfire ATI/AMD cards. At the low end, I would go for the SAPPHIRE 100293DP Radeon HD 5570 1GB
which costs about the same as the 9500 GT but performs better. At the mid-range, I would go for the HIS H577FK1GD Radeon HD 5770 (Juniper XT) 1GB
which is about equal to the Radeon 4870, depending on application and setup. At the high-end, there is the budget busting, for you, HIS H587FN1GD Radeon HD 5870 1GB
which is one of the fastest single GPU cards around. All Radeon 5 series cards have DirectX 11 and EyeFinity.
Operating System: There is no reason to buy the full install of Windows 7 unless you call Microsoft frequently if there is a problem which no one, even builders, does and see yourself building a new PC with a new motherboard in less than three years. I would save the cash and get the Microsoft Windows 7 Home Premium 64-bit 1-Pack for System Builders
which costs $70 less. Aside from the license, there is no difference between the two versions. The license for system builders prevents you from moving the operating system to a new motherboard, though there is no technical reason preventing this.
Hard Drive: I would get one with a larger cache, like the Western Digital Caviar Black WD5001AALS 500GB
which is slightly less expensive.