Great job. The only things I would suggest are probably worthless for what you are doing but, I would do it for mine.
1. Get some Artic Silver and a good Heat Sink. (probably won't matter, unless you overclock, but running cooler gives the CPU more life regardless.)
2. Make sure you have audio inputs for both DVD burners. It can be annoying to not have an audio hookup from your secondary one, and you have to change drives so you can give a listen to see if a newly burned audio CD-R worked.
Also, make sure you save enough money for an OS, keyboard/mouse, speakers, scanner, printer, router, memory card reader, Video-In card, 2nd harddrive for RAID, 5 1/2" floppy drive, thumb drive, CD-Rs, DVD+R DLs, groceries or anything else I am not thinking of right now.
Edit: I meant 5 1/4" and 3 1/2" floppy drives. I thunked faster than I typed.