I imagine with modern compression these screens would be quite small. With some scene alterations and manual touch-up
Monkey Island 1 was a 4 disc Amiga game - so around 3.5MB in size. Mostly graphics, I imagine. CPC graphics would be at least half the size, but I don't think you'd be fitting it on a single 512KB cart image, or 720KB 3.5" floppy image, never mind around 5 3" floppies.
Maybe a 2MB .SNA for those with large memory expansions...