Right, sorry if I keep going on about the same but yeah..

These are the current specs that I'm going to get:
CPU - Intel Core i7-3770K 3.5GHz Quad-Core Processor
CPU cooler - Noctua NH-D14 65.0 CFM CPU Cooler
Motherboard - MSI Z77A-GD65 ATX LGA1155 Motherboard
Memory - Corsair Vengeance 16GB (4 x 4GB) DDR3-1600 Memory
Hard drive - Crucial M4 512GB 2.5" Solid State Disk
Western Digital Caviar Green 2TB 3.5" 5400RPM Internal Hard Drive
Video Card - EVGA GeForce GTX 680 4GB Video Card (2-Way SLI)
Case - ?
Power Supply - Corsair 850W ATX12V / EPS12V Power Supply
Optical drive - ?
OS - WIndows 7 Ultimate 64 bit
Few questions before I'm going to order my computer..
Is this cpu cooler really good enough to hold 4.5 ghz? I want to be absolutely sure and hope it keeps stable, dont want a burned cpu.
So I'm getting 16gb RAM, is it possible to get 32gb in the future if for any reason I need it?
Is the motherboard best for this setup? Are there any features I should have on a different motherboard?
Videocard... I know im getting annoying but isn't 680 SLI like a safer bet for future games? I can afford it.
Any cases you guys prefer? The ones stated previously looks good, I'll have a look at them tomorow, I want to know everyones opinion.
Is the power supply good enough to handle 4.5ghz? Should I get a bigger one to be sure?
Optical drive? I dont know much about this so... I will watch some blueray movies on it if possible and normal cd's. Don't know wich ones is best.
And lastly!
Might be offtopic but wich monitor would be best for this rig? I'd love a high quality monitor max resolution, it may be 3d.
Thanks for all your help guys I apreciate it. <3