Recommendations?

I'm about to make my first build and I really wanted something worthwhile to build.
I've looked around and asked a few people and I have a list compiled of the stuff I'm going to use.
I was just wondering if there was anything I should use instead.
Also I'm in Australia, so I can't buy things off newegg.

APPROXIMATE PURCHASE DATE: Within a year? (but the sooner the better)
BUDGET RANGE: $0-$2,500 (American dollars of course)
SYSTEM USAGE FROM MOST TO LEAST IMPORTANT: gaming, surfing, school essays, watching movies
PARTS NOT REQUIRED: keyboard, mouse , monitor, networking, speakers
PREFERRED WEBSITE(S) FOR PARTS: None because i haven't seen a website that will ship to Aus...
COUNTRY OF ORIGIN: Australia
PARTS PREFERENCES: Similar to items below. I like Asus and Antec.
OVERCLOCKING: Maybe (probably)
SLI OR CROSSFIRE: Maybe (probably not)
MONITOR RESOLUTION: I have one already

Case: Antec 902
CPU: i7-860
Mobo: Asus p7p55d pro
RAM: 8gb corsair (4x gb i7/i5 ram)
GPU: ATI Radeon HD 5850
HDD: 2x WD Caviar Black 500gb RAID0
Sound:Creative PCI Express X-Fi Xtreme Audio
CPU Cooler: Zalman cnps 10x extreme
ODD: Pioneer 20x (oem)
PSU: Antec truepower quattro 850W

I'll probably run 7 or vista pro if it matters.

I wanted these kind of specs but if there is a huge price difference without much performance loss that would be great. Also cheap performance increases are good.

Thanks.

ok i'm editing now

it's a 21.5"

max res is 1920x1080

Thanks.

The 1200 was an option from the start, but i met budgeting and availability issues, which is to say it was a bit expensive, and i couldn't find a shop that had it.
I get most of my stuff from a shop in Chinatown, so their stock is limited. They did have a 902 though, so i went with that.

Also, the link to the hdd is not working, it just comes up with the home page. Can you give me the model instead? Then I'll go and find it myself to see.

Thanks again.

I was looking at the site the shop that i'm getting the parts from and they don't stock the caviar black. In fact none of the shops around here do.
Is the Seagate ST3500418AS 500gb okay?
It's just that the online sites tend to be a bit expensive around here.

Thanks.

once again, they don't supply it. They don't have any caviar black drives or spinpoints. They only stock the barracudas and some caviar green drives.

The barracudas seemed like a better deal.
And yes, we don't have much down here =/

No i wasn't shopping at msy but their prices are better anyway =)

I've also gone with the i5 instead of the i7, mainly because of price.

Would you recommend it?