First build Rate and Check my parts please

LP2010

New Member
I will mainly use this computer for internet browsing, playing HD (10+ GB mkv) films and excel processing etc.
Mobo ASUS P7H55-M/USB3 £79.99
http://www.scan.co.uk/Products/Asus-P7H55-M-USB3-Intel-H55-S-1156-PCI-E-20-(x16)-DDR3-2200(OC)-SATA-6Gb-s-USB-30-mATX

CPU Intel i5 760 £149.00
http://www.scan.co.uk/Products/Intel-i5-760-S1156-Lynnfield-Quad-Core-28-GHz-8MB-Cache-Core-Ratio-21x-95W-Retail

RAM Corsair XMS 2x2gb ddr3 £75.32
http://www.scan.co.uk/Products/4GB-(2x2GB)-Corsair-XMS3-Classic-DDR3-PC3-10666-(1333)-Non-ECC-Unbuffered-CAS-9-9-9-24-150V

PSU Thermaltake TR2 470W £35.00
http://www.novatech.co.uk/novatech/specpage.html?TT-TR247S
OR
http://www.scan.co.uk/Products/550W-EZcool-Silent-Power-Supply-AMD-and-P4-Ready-12cm-Silent-Fan-24Pin-6xPCI-SATA-inc-P2-Cable

HDD Seagate Barracuda 500GB 7200rpm £29.95
http://www.scan.co.uk/Products/500GB-Seagate-ST3500418AS-Barracuda-720012-SATA-3Gb-s-7200rpm-16MB-Cache-11-ms

Case Asus TA-8H3, Black Mid Tower Case, Headphone/ Mic In/ 2x USB 2.0, ATX/ Micro ATX, Without PSU £21.00
http://www.scan.co.uk/Products/Asus-TA-8H3-Black-Mid-Tower-Case-Headphone-Mic-In-2x-USB-20-ATX-Micro-ATX-Without-PSU


Would appreciate comments on the parts compatibility with each other as i'm a very newbie they might be incompatible,
its future potential ability for upgrades. ( future processors)
Also, the disadvantages of having a micro ATX. I wanted the board to have usb3.0 and hdmi. This board was best priced so i picked it.
general value for money with this set up and my prices
Help with picking a psu as i've read it is vital not to get a cheap one which is why i have avoided case + psu packages for £25.00, out of the two which are better or neither: model X
Will i need any other parts to help with cooling in this machine?
OS i planned on mounting windows 7 ultimate ( bittorrent d/l) iso to disc and using that, will this work with a completely new build?
I doubt this computer will be used for gaming ever and plan on keeping this for 4-5 years. Any comments on its life expectancy?

Also, ( I AM NEW) is it a certainty that after 4-5 years i will have to scrap this pc and re build a new one and will be unable to make significant upgrades.

Thank you in advance to any help i receive
 
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