Should work just fine, tho you'll need Toast to burn with. I never needed the FBW CD toolkit for any of my internal SCSI CD burners.
Tho I had an old Powerbook 5300c with an external portable CDROM drive, that I needed the toolkit driver, unless I booted the system with a bootable Mac OS Install CD in the drive, then I could swap the CD with any other CD, and it would mount.
Little known fact, a bootable HFS CD has the Apple CD/DVD ROM driver in the partition table. Old World Mac's will boot from a unsupported HFS drive if you hold the right key combination at boot, or you have no other bootable disks.
As far as OS 9's builtin disk burning software, I don't think it can be hacked to work with SCSI drives. I was never able to hack OS X to burn disks from a SCSI drive, tho they will work for unsupported ATA drives with a small hack.
Likely, now that I know how to hack OS 9 Extensions, we could get Disc Burning to work in OS 9 on unsupported ATA drives, but that really doesn't help with SCSI, I just thought I'd put it out there for OS 9 users that want Apple Disc Burn software to work with replacement drives.