If you are not overclock I would get an H77 board and save some money there and get a better CPU. If your not overclocking you don't need anything faster than a i5-3350P.
As far as cases go unless you really want the bling of a NZXT Case, you can just get a Antec Three Hundred or Corsair 200R/300R to save some money there too. Case isn't going to improve performance that much and I recommend adding fans as needed. Start using stock fans that come with the case and add more or better fans if your not reaching the thermals you want.
CPU: Intel Core i5-3570K 3.4GHz Quad-Core Processor ($189.99 @ Microcenter)
CPU Cooler: Corsair H100 92.0 CFM Liquid CPU Cooler ($97.13 @ TigerDirect)
Motherboard: ASRock Z77 Extreme4 ATX LGA1155 Motherboard ($134.98 @ Amazon)
Memory: Corsair Vengeance LP 16GB (2 x 8GB) DDR3-1600 Memory ($128.53 @ Amazon)
Storage: Samsung 840 Pro Series 128GB 2.5" Solid State Disk ($124.99 @ NCIX US)
Storage: Seagate Desktop HDD 4TB 3.5" 5900RPM Internal Hard Drive ($171.97 @ Outlet PC)
Video Card: EVGA GeForce GTX 660 2GB Video Card ($194.99 @ Newegg)
Wireless Network Adapter: Rosewill RNX-N180UBE 802.11b/g/n USB 2.0 Wi-Fi Adapter ($16.99 @ Amazon)
Case: Cooler Master HAF 932 Blue ATX Full Tower Case ($159.99 @ Newegg)
Power Supply: EVGA SuperNOVA 650W 80 PLUS Gold Certified ATX12V / EPS12V Power Supply ($89.99 @ Microcenter)
Optical Drive: Asus BC-12B1ST/BLK/B/AS Blu-Ray Reader, DVD/CD Writer ($49.99 @ Newegg)
Operating System: Microsoft Windows 7 Professional SP1 (OEM) (64-bit) ($129.97 @ Outlet PC)
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2013-07-05 21:13 EDT-0400)
*(Updated the case to one supporting front usb 3.0... the 932 has front 3.0 but didn't notice that the 922 didn't)
Every once in a while you can get an OK deal in store but it will rarely be on what you want or need. And yes... it was cluttered and "Messy" parts wise. It was cleaned and a good build was picked.
As for the build that was picked you can reduce some cost (If needed) by going with general optical drive instead of bluray(or none), removing wifi, switching from win 7 pro to home edition, and removing corsair liq cooler for cpu fan.