I have just ordered per machine:

2 73GB Western Digital 10K RPM Drives
1 G5 jam
1 ATI Radion 9800 Pro
1 USB card (with internal USB's)
1 BlackMagic Decklink Extreme video input card

and a killer case that I am designing.

The scsi option was way too expensive for only a little bit of improvement. External racks an all. FYI the Glyph rack mount is only a single channel SCSI thus it prevents you from taking advantage of both channels on the ATTO UL4D card. The Storcase Data Silo does provide support for dual channel. http://www.storcase.com/DataSilo/ds320.asp

Tyler