I'm looking to build myself a new desktop. I'm relatively new to this, so I'm hoping for some feedback my configuration, especially any advice on bringing down the price a little bit without sacrificing too much on performance. I know the power supply is probably a little higher than I need, but I do want to be able to upgrade in the future. Anyway, here's what I'm looking at:

COOLER MASTER RC-690-KKN1-GP Black SECC/ ABS ATX Mid Tower Computer Case

ASUS RAMPAGE FORMULA LGA 775 Intel X48 ATX Intel Motherboard

Intel Core2 Quad Q9400 2.66GHz 6MB L2 Cache LGA 775 95W Quad-Core Processor

Western Digital Caviar Black WD1001FALS 1TB 7200 RPM 32MB Cache SATA 3.0Gb/s 3.5" Internal Hard Drives

SeaSonic M12 SS-700HM 700W ATX12V V2.3 / EPS12V V2.91 SLI Certified CrossFire Ready 80 PLUS Certified Modular Active PFC Power Supply

XFX HD-487A-ZWFC Radeon HD 4870 1GB 256-bit GDDR5 PCI Express 2.0 x16 HDCP Ready CrossFire Supported Video Card

G.SKILL 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400) Dual Channel Kit Desktop Memory Model F2-6400CL5D-4GBPQ

SAMSUNG Black 22X DVD+R 8X DVD+RW 16X DVD-ROM 48X CD-ROM 2MB Cache SATA DVD Burner

Any feedback would be much appreciated. Thanks!

Does it look like I'm over- or under-spending on any of the parts? Also, I just want to make sure there are no glaring compatibility issues that I've overlooked.