For Blender and CAD

Approximate Purchase Date: week or 2
System Usage from Most to Least Important: Blender (3D), Draftsight (cad), GIMP, Inkscape, surfing the internet, watching movies, music etc
Are you buying a monitor: Yes
OS: Ubuntu with LXDE
Location: Belfast, UK
Overclocking: No, but i choose i5-3570K ( Intel HD Graphics 4000 ) because it has better graphics then i5-3570 ( Intel HD Graphics 2500 ) and I am thinking to wait a while before i buy GeForce card. And these CPU are just ~£3 difference.
SLI or Crossfire: Maybe

My build:
CPU: Intel Core i5-3570K 3.4GHz Quad-Core Processor (£161.99 @ Aria PC)
CPU Cooler: Cooler Master Hyper 212 EVO 82.9 CFM Sleeve Bearing CPU Cooler (£25.45 @ Scan.co.uk)
Motherboard: ASRock Z77 Extreme4 ATX LGA1155 Motherboard (£101.98 @ Dabs)
Memory: G.Skill Ripjaws X Series 8GB (2 x 4GB) DDR3-1600 Memory (£35.99 @ Aria PC)
Storage: OCZ Agility 3 120GB 2.5" Solid State Disk (£67.99 @ Amazon UK)
Storage: Seagate Barracuda 3TB 3.5" 7200RPM Internal Hard Drive (£97.99 @ Overclockers.co.uk)
Video Card: EVGA GeForce GTX 660 2GB Video Card (£177.98 @ Dabs)
Case: Fractal Design Define R4 (Arctic White) ATX Mid Tower Case (£98.21 @ Scan.co.uk)
Power Supply: Corsair Enthusiast 750W 80 PLUS Bronze Certified ATX12V / EPS12V Power Supply (£81.49 @ Ebuyer)
Total: £849.07 (on 28 of December 2012)
+
Monitor: AOC i2353Fh 23'' (~£140) or Lg ips235v 23'' (~130)
ideal monitor would be with H-IPS but the prices, so just IPS is good.
Your Monitor Resolution: 1920x1080

Why Are You Upgrading: I'm having trouble running Blender and it is time to go for my 8 years old computer which I build. so lots to learn for me since that time  


My main questions:
1. Do the components match and what You think about them according to my needs?
2. How good Blender work on Intel HD Graphics 4000 included in Intel Core i5-3570K?
3. Any suggestion on monitor for my purposes ?

Thank you