Suggestions on building a DAW

[The Dude]

Hello Everyone,

Trying to educate myself before building my DAW.

Was considering the following:

Pentium IV 2.8
Gigabyte GA-8IHXP i850E
1024 mb 1066 RDRAM
Adaptec 39160 SCSI card
Seagate ST373405LCV Hard Drive (x2)(for Recorded data)
IBM DTLA-307075 (for OS and software)(Few games of course)
ATI 9700 Pro APG Video Card
MOTU 1296
TC Elcetronics G-Force Effects
Mesa Boogie Triaxis Pre-amp
Windows XP Professional
I have Sonar XL2.0, Need suggestions on software that does Surround,
Front,Rear,Center,Sub-woofer mixing
Insert this in a 5U rackmount Case

I would like to be able to record all 12 inputs at once from the MOTU 1296.
This possible?

Any suggestions,comments,criticism is welcomed, I like hearing what other
have experienced


Thanks,
The Dude