5 revs is recommended for an archive quality image.
Keir Frasers' Disk Utilities pack on Github converts SCP to IPF for the set list of titles it has - not all are covered yet. There is a thread here "Creating your own IPF's" where a pre-compiled Disk Utilities is regularly updated by "ACD2000" - one note to this is apparently only Kyroflux software can make a writable IPF on all titles atm. Keir seems to be focusing on emulation use so not all outputs are suitable for disk use.
You could clean and re-write your dragon's lair disk(s) from images :
http://ftp2.grandis.nu/turran/FTP/Th...onsLairNTSC%20[Unofficial%20IPFs%20of%20Dragon's%20Lair%20NTSC%20for%20Demoniac].7z