I have bad news for you. According to this there are two versions of the G4 800 iMac. An early model and a late one.

http://www.everymac.com/systems/apple/imac/specs/imac_800_fp_macosx.html

The late iMac G4 800 is Classic mode only and not bootable into OS 9 so I hope you were able to verify which you were getting.