[dba-Tech] CD burning machine

Hi all,
I need to put together a machine for burning multiple CDs. I want to add ten
CD/RW drives if possible. And I want to make this from used parts that I
have if possible.
 
I have:
a case with 10 5-1/4" bays
7 CD/RW drives
A socket 478 MB with 2 IDE channels
A Pentium 4
RAM
A 450w power supply
 
I can get an add-in PCI card for about $40 which will give me two more IDE
channels
 
So given that I have 1 HD on the IDE that gives me 7 IDE devices that I can
run. I could add another PCI/IDE card but I'm worried about not having
enough interrupts. 
 
Any thoughts/ideas on this would be appreciated.
 
John B.