First time build, trying to keep it close to $800. Opinions Please

I am taking the plunge and have decided to build a system for the first time. I have been using pre-built Laptops for the last 5 years, so my knowledge of what is going on inside desktops is definetely dated. I will be using this system to edit 1080P HD videos and play current games. I have switched up my selection no less than 100x, but below is what come up with to date. I know some parts the Case and the PSU may be expensive for a $800 build, but I wanted to pick ground work components that could last many future upgrades, instead of putting money towards the components that will become outdated quickly. Please take a look and make sure I am not making any mistakes. Everything after rebated, taxes, and shipping comes to about $850.

SAMSUNG 22X DVD±R DVD Burner with LightScribe Black SATA Model SH-S223Q/BEBN - OEM http://www.newegg.com/Product/Prod [...] 6827151173

COOLER MASTER RC-690-KKN1-GP Black SECC/ ABS ATX Mid Tower Computer Case - Retail http://www.newegg.com/Product/Prod [...] 6811119137

MSI R4850-512M Radeon HD 4850 512MB 256-bit GDDR3 PCI Express 2.0 x16 HDCP Ready CrossFire Supported Video Card - Retail http://www.newegg.com/Product/Prod [...] 6814127370

CORSAIR CMPSU-750TX 750W ATX12V / EPS12V NVIDIA SLI Ready ATI CrossFire Ready 80 PLUS Certified Active PFC Power Supply - Retail
http://www.newegg.com/Product/Prod [...] 6817139006

Patriot Extreme Performance 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400) Dual Channel Kit Desktop Memory Model PDC24G6400LLK - Retail http://www.newegg.com/Product/Prod [...] 6820220269

XIGMATEK HDT-S1283 120mm Rifle CPU Cooler - Retail
http://www.newegg.com/Product/Prod [...] 6835233003

XIGMATEK ACK-I7751 Retention Bracket - Retail
[url]http://www.newegg.com/Product/Product.aspx?Item=N82E16835233019[/url]

[u]ASUS P5Q Pro LGA 775 Intel P45 ATX Intel Motherboard - Retail
Western Digital Caviar SE16 WD5000AAKS 500GB 7200 RPM SATA 3.0Gb/s Hard Drive - OEM Combo deal from newegg.com no direct link. $175.

Intel Core 2 Duo E7200 Wolfdale 2.53GHz LGA 775 65W Dual-Core Processor Model BX80571E7200 - Retail From local store. $99.99

Microsoft Windows Vista Home Premium SP1 64-bit English for System Builders 1pk DSP OEI DVD - OEM From local store 79.99.

Looks solid, although I'm not sure whether you would be served by a quad core (Q6600) if you are editing video. Not entirely sure what the current state of play on that is.

Comments forum users?

Good work on the design though - someone's done their homework!

I for one would go with the Q6600 now..

Even if you do the math, $100 now for the processor you have chosen.. You may one day get a quad for $100 which means you have spent $200.

Just take the plunge now and spend the $190 and have a better processor from the start.

If you arent overclocking just use the stock heatsink, there $35 towards your processor.