Just make sure you don't have a conflict with SCSI address between the HD and CD-ROM. If your "AMIGA 2000 SCSI & RAM CONTROLLER" is a 2091 with 7.0 ROMs, that an excellent choice to run the CD from. If it has earlier ROMs, it will not work well, or at all depending how old they are.
3.9OS has the driver, but I still use Asimware 3.10 - It is an excellent driver. I highly recommend it.
