How hard is building a PC, and is this a good build?

[LEFT][SIZE=12px][FONT=Verdana]Hi, i’m just seeking some advice on getting a new [FONT=inherit][U][FONT=inherit]gaming[/FONT][/U]http://images.intellitxt.com/ast/adTypes/icon1.png[/FONT] PC. I have created a build, but need confirmation that it’s good. Also, I am worrying about failing at the building of the system itself. I am 14 years old and know a fair bit about computers, but i’m definitely no expert. So with the right tools (basically just a phillips screwdriver xD), all the compatible parts I need, the good old Newegg tutorial, and a bit of common sense, how easy is it to build a PC? I know about frying the motherboard with static, and I plan to build the PC on a wooden table with a wooden laminate floor underneath. I will also be ‘grounding’ myself very often by touching the case. So how easy is it to build, do I need an anti static wrist strap, and is this a decent and good value build? Thanks in advance for any replies.

Motherboard: Gigabyte GA-Z77X-D3H LGA 1155 Intel Z77 @ £98.92
http://www.amazon.co.uk/gp/product […] ROKL5A1OLE

CPU: Intel Core i5-3570K Ivy Bridge 3.4GHz (3.8GHz Turbo) LGA 1155 77W @ £149.99
http://www.amazon.co.uk/gp/product […] ROKL5A1OLE

Video Card: XFX ATI Radeon HD6850 Graphics Card PCI-e 1024 MB GDDR5 Memory @ £139
http://www.amazon.co.uk/gp/product […] PE1EAZ1XDH

Ram: G.SKILL Ripjaws Series 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 1600 @ £33.14
http://www.amazon.co.uk/gp/product […] YGP86NG3IP

Case: Cooler Master Elite 430 @ £39.47
http://www.amazon.co.uk/gp/product […] ROKL5A1OLE

Power Supply: XFX Core Edition PRO650W 650W @ £78.83
http://www.amazon.co.uk/gp/product […] YGP86NG3IP

DVD Rom Drive: ASUS 24X DVD Burner @ £15.99
http://www.amazon.co.uk/gp/product […] ROKL5A1OLE

CPU Cooler: Stock fan @ £0.00

Hard Drive: Seagate Barracuda 1TB 7200 @ £56.48
http://www.amazon.co.uk/gp/product […] GSAV8PJ0BI

Subtotal: £611.82[/FONT][/SIZE][/LEFT]