My best advice is to get the 4590 + H97 mobo which allows you to step up to a R9 280x for the same price.
PCPartPicker part list:
http://pcpartpicker.com/p/qZDqXL
Price breakdown by merchant: http://pcpartpicker.com/p/qZDqXL/by_merchant/
CPU: Intel Core i5-4590 3.3GHz Quad-Core Processor ($187.99 @ NCIX US)
Motherboard: ASRock H97 Anniversary ATX LGA1150 Motherboard ($71.99 @ SuperBiiz)
Memory: G.Skill Ripjaws X Series 8GB (1 x 8GB) DDR3-1866 Memory ($62.95 @ OutletPC)
Storage: Western Digital Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive ($51.89 @ OutletPC)
Video Card: Sapphire Radeon R9 280X 3GB Video Card ($212.98 @ Newegg)
Case: NZXT H440 (Black/Red) ATX Mid Tower Case ($115.99 @ SuperBiiz)
Power Supply: XFX 550W 80+ Bronze Certified ATX Power Supply ($48.99 @ SuperBiiz)
Total: $752.78
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2015-02-28 02:30 EST-0500
Overclocking is over-rated and will not even come close to making up the difference that getting the 280x over the 270x would make. This is far superior in gaming.