Dude, 250GB is all you need? You said this is for 1080p video editing. Perhaps you're not aware how much space uncompressed 1080p video will take. Get 2x500 GB in RAID 1 at least.
It looks like you got a lot of info in this thread, so I'm not going to spec out anything specific, but if you want you can PM me with exactly what you plan to use it for and what kind of price you're looking for, and I can put something together that should suit your needs. I do that kind of stuff for a living.
Hell, if you aren't comfortable building something, I could even build it up for you, get the OS installed and updated with drivers and all that. Let me know if you need any help.