What's your budget for your processor. The FX-62 is nothing
compared to what Core 2 Duo offers. The E6600 retails at $316 MSRP, and it beats or matches the FX-62 in everything -for $700 cheaper. If you're looking for the best from Intel, wait for the Core 2 Duo Extreme X6800.
If you're going Intel, get some good DDR2 RAM. When Ownage comes online, he can help you with that. He knows more than I do about RAM.
The hard drives look nice, but are you looking for pure speed, or do you want size and speed. I would just get the Seagate 7200.10 320GB instead. It's fast and has lots of space.
Those are nice video cards, but are you running widescreen monitors in dual-monitor, or using a 30"+ widescreen monitor? If you're not, then Quad SLI is a waste of money and power. You might as well save some money and settle with some 7900 GTX's in SLI or X1900 XTX's in CrossFire.
I assume you're getting the PowerPC & Cooling 1KW PSU? That's so expensive, and definately NOT needed. If you're really settling for Quad SLI, you don't need that much power, unless you're going to power the next two computers at a LAN party.
Seriously though, you don't need that much power. You'll be better off with a nice 600W or 700W by saving money.
Either way, if you can wait about 10 days, Core 2 Duo will make your wait worth it. If you're really desperate for something RIGHT NOW, then AM2 is the best right now. I seriously recommend you wait for Core 2 Duo, but it's totally your choice.