That's about $950. I guess it would be pretty similar, except for the power supply, hard drive, and operating system (I have 32bit right now).
Plus, that case is nice and pretty.
I don't know. You said my PSU could handle them, so I should probably just upgrade those two parts by themselves. You'll have to forgive me for getting ahead of myself. It happens pretty much every time I have thoughts of upgrading a part.