I have a similar setup, minus one hard drive.
I have my CD-ROM on IDE0/Master, CD-RW on IDE0/Slave, Zip250 on IDE1/Master, 60GB Seagate Barracuda IV on ATA100 0/Master, and 20GB Western Digital 7200ROM on ATA100 0/Slave.
So it pretty much looks like this:
IDE0 - CD-ROM, CD-RW
IDE1 - Zip250
ATA100 - 60GB HDD, 20GB HDD