Added faster RAM for a little cheaper. If you do not do mail rebate then a set of G.skill Snipers will also do the job for cheaper.
The PSU wattage is fine.
HOWEVER, if you are planning to overclock, you need to be looking at a better power supply, the CX should not be OCd on.
So this would be better :
http://pcpartpicker.com/part/xfx-power-supply-p1550sxxb9
PCPartPicker part list:
http://pcpartpicker.com/p/1ACwt
Price breakdown by merchant: http://pcpartpicker.com/p/1ACwt/by_merchant/
Benchmarks: http://pcpartpicker.com/p/1ACwt/benchmarks/
CPU: Intel Core i5-4670K 3.4GHz Quad-Core Processor ($229.98 @ Outlet PC)
CPU Cooler: Cooler Master Hyper 212 EVO 82.9 CFM Sleeve Bearing CPU Cooler ($29.98 @ Outlet PC)
Motherboard: MSI Z87-G45 Gaming ATX LGA1150 Motherboard ($149.99 @ NCIX US)
Memory: Corsair Vengeance LP 8GB (2 x 4GB) DDR3-1866 Memory ($57.99 @ Newegg)
Storage: Seagate Barracuda 1TB 3.5" 7200RPM Internal Hard Drive ($61.98 @ Outlet PC)
Video Card: Asus GeForce GTX 760 2GB Video Card ($250.98 @ SuperBiiz)
Case: Fractal Design Arc Midi R2 (Black) ATX Mid Tower Case ($69.99 @ Newegg)
Power Supply: Corsair CX 500W 80 PLUS Bronze Certified ATX12V Power Supply ($34.99 @ Newegg)
Monitor: Acer H236HL bid 60Hz 23.0" Monitor ($159.99 @ Amazon)
Keyboard: Microsoft SIDEWINDER X4 Wired Gaming Keyboard ($49.99 @ Newegg)
Mouse: Corsair Vengeance M65 Wired Laser Mouse ($54.99 @ Newegg)
Total: $1150.85
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2013-09-06 12:30 EDT-0400)