I am a HUGE hardware buff and I do believe that you are not "overpaying" but instead "mis-selecting" the proper parts.
First thing that stuck out is the Power Supply. That is THE number one thing you never want to skimp out on. It may be... 80 plus certified but it is not bronze, silver, gold or platinum. Corsair is a good brand that is what I have but make sure at the minimum it is bronze certified. This one right here for a few bucks more, it's 100% modular which will keep your case a lot cleaner and it GOLD certified, this PSU will also power dual graphics cards as my friend has a 650w and powers two 6950's unlocked to 6970's perfectly fine.
$139.99 - Power Supply -
http://www.newegg.com/Product/Product.aspx?Item=N82E16817151088
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Next on the list is the RAM, you had dual channel RAM and a tri-channel motherboard. This is not good. You want to make sure that you get triple slot and it'll actually cost you LESS than what you are paying for the dual. Again, corsair is a good brand but definitely over chosen. I had corsair for my first RAM but have since moved on to cheaper better solutions. This G.Skill RAM is the one of(if not the most) stable RAM you can get and I currently have 12GB of this in my system right now with an i7 920@4GHz. Can't ask for much more than that out of RAM for this price. Now grant it when I bought it, it was $164 for 6GB. If that tells you how much the price has went down on these bad boys. If you want, pick up 2 sets and pay $120 free shipping
Not bad for 12GB.
$69.99 - RAM -
http://www.newegg.com/Product/Product.aspx?Item=N82E16820231225
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CD/DVD Combo is not a big deal, you picked a good brand I love Samsung, but for the same price this LG will get you 2x better DVD-R and DVD+R speeds.
Again, free shipping!
$18.99 - CD/DVD Combo -
http://www.newegg.com/Product/Product.aspx?Item=N82E16827136177
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Ahhh, the HDD... right now in my HUMBLE AND HONEST opinion a SSD is still to much $ for the GB. You can get equally good performance a MUCH better price and get a HELL of a lot more storage space. Now take these Samsung F3 500GB HDD's for example. I myself have 4 of these in RAID 0 and short-stroked down to 250GB. Now I don't know if you know what that means but the main point is that I can READ and WRITE just as fast as a SSD but have the opportunity for 2-3x the storage capacity if done correctly. These are single platter 500GB hard drive which give optimum performance. I still love my good ol' WD though, so if that is the case then the second link is probably the best choice you can make for the price.
$49.99 - Internal Hard Drive -
http://www.newegg.com/Product/Product.aspx?Item=N82E16822152181
$69.99 - Alternate -
http://www.newegg.com/Product/Product.aspx?Item=N82E16822136319
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The intel i7 processors are BEASTS but don't let the naming fool you, the i7 940 actually performs worse than the i7 920. for the $30 price difference I believe you would be happier and much more satisfied with OC ability with it compared to the 940. Just a hint, if you have a local Fry's or Micro Center stop by there to pick up the processor as it will be a HELL of a lot cheaper(were talking $75-$100 buck or so). If you don't have one by you though then newegg will be your friend. Like I said, with the RAM I pointed out to you and that processor you can achieve an Over-clock of 4GHz on that bad boy easily. =)
$299.99 - Processor -
http://www.newegg.com/Product/Product.aspx?Item=N82E16819115202
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Your motherboard is a good choice but not the best for over-clocking. The ASUS motherboards are a "tad" overpriced for their performance. The EVGA boards have a BIOS in them that makes Over-clocking simple and easy. I also think that the color of the motherboard look more bad-ass if I can say so. It's a little cheaper than the ASUS you had picked out and give better performance, why not? =)
$209.99 - Motherboard -
http://www.newegg.com/Product/Product.aspx?Item=N82E16813188068
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Can't really go wrong with Antec , they are a great brand, quality and have amazing prices on their cases. The 300 is a good choice for a smaller case that is very quiet and has great airflow. I can only suggest here as this is another personal opinion but you can alway go for the one with the blue LED fans for $5 less and still has free shipping or you can take a look at the FRACTAL case which is just plain beautiful and once you see it, it will be hard to say no... that is, unless you can't justify pay double the price for that case, but honestly... you really get double the quality.
$54.99 - PC Case -
http://www.newegg.com/Product/Product.aspx?Item=N82E16811129066
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In saying that you did an overall good job on picking your parts for being hardware retarded. Lol. You had a few mess-ups but that it bound to happen when building your first PC. Believe me, you don't want to know what my first one looked like. Haha. I hope that this served as a good guide on educating yourself as well as everyone else. This was an emergency announcement from †Blade†.... I'M OUT! :O
$109.99 - Alternate PC Case -
http://www.newegg.com/Product/Product.aspx?Item=N82E16811352002