My first build low 2000s

Hello everyone!

I am a new builder without much experience (I have replaced a dead psu and added some memory to my dad's computer). I have used Tom's a lot in researching the parts so I figured the experts and enthusiasts here could give me some advice (making sure parts are compatible, are good choices, etc).

A little bit about me: I really like to build things (legos were my favorite toy as a kid) so I have always have wanted to build my own computer. I don't think connecting everything together will be hard but working in the BIOS scares me a little. I have saved up enough cash to hopefully build a pretty kick ass rig that will last a while.

APPROXIMATE PURCHASE DATE: March 1st

BUDGET RANGE: Low 2000's

SYSTEM USAGE FROM MOST TO LEAST IMPORTANT: Gaming, internet, music, movies

PARTS NOT REQUIRED: So far I have only bought speakers - Logitech Z523

PREFERRED WEBSITE(S) FOR PARTS: newegg or retail stores (Fry's, micro center)

COUNTRY OF ORIGIN: US

PARTS PREFERENCES: none

OVERCLOCKING: Probably but not too high

SLI OR CROSSFIRE: Maybe in the future

MONITOR RESOLUTION: 1920x1080

ADDITIONAL COMMENTS: Here's what I am thinking for the parts

Processor: Intel i7 920 $200
http://www.microcenter.com/single_product_results.phtml...

Motherboard: Asus P6x58D Premium $310
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

CPU cooler: Probably going to go with the Thermalright 120, Cogage Spirit, or noctua NH-12 $70ish

GPU: XFX Radeon 5870 $400
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Memory: Corsair Dominator 3 x 2GB $220
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

HD: WD Caviar Black 1 TB $100
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

CD/DVD: Sony Optiarc combo $28
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

PSU: Not sure - Corsair 750 or 850w tx or hx $120-180
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Keyboard: Logitech g110 $80
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Mouse: Logitech mx518 $40
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Monitor: Samsung P2350 $230
http://www.frys.com/product/5979304

Case: Silverstone FT-01BW $200
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

OS: Windows 7 64bit home premium OEM $105
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Total: $2163

I am probably going to pick up thermal paste and a static wrist strap; are there any other miscellaneous items I will need to put everything together?

For the PSU, 750w is enough as it stands but should I go for 850w in case I decided to get another 5870 for crossfire? Would you guys recommend the tx or hx corsair models? If I do crossfire, it will not be for a couple of years, would it just be easier to just buy a newer model gpu?

Future plans: a sound card, ssd, maybe an i9  .

Thanks a bunch for reading everything!