Advice on upgrade (gygabyte ds3r)

hi,

i build my pc about three years ago mainly for gaming and photo editing -- i was a newbie then, i'm still a newbie now, but somehow the pc works fine.

i'm seeking advices on my upgrade research homework (my mb is a Gigabyte P35C-DS3R v1, runs on a 500W Antec power supply, with 20 inch monitor):

- processor: Intel Core 2 Duo E6750 -> Intel Core 2 Quad Q9550 Yorkfield 2.83GHz LGA 775 95W Quad-Core Desktop Processor Model BX80569Q9550 ($280)

- hard drive: Hitachi 320 GB -- SATA II -> add a system SSD drive: Kingston SSDNow V Series SNV425-S2/64GB 2.5" 64GB SATA II Internal Solid State Drive ($140)

- video card: BFG NVIDIA GeForce 8800 GTS -> GIGABYTE GV-R577UD-1GD Radeon HD 5770 1GB 128-bit GDDR5 PCI Express 2.0 x16 HDCP Ready CrossFireX Support Video Card ($150)

re memory, i have 2 x 1024 DDR2-SDRAM PC2-6400 [DDR2-800] by Geil. what about just adding two GeIL 2GB 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400) Desktop Memory Model GX22GB6400LX ($55) and overclocking the FSB from 333 to 400? (note the board could handle two ddr3 modules).

Total: $825

is this reasonable or am i missing something?

thanks.