I promise this was entirely coincidental! I must have used the same King's Quest google image!! But yeah, great minds thinking alike indeed!!!
Only teasing, Sick Fiction...
Besides, mine was only for the second Demo; yours appears to be for the actual game!
BTW: With far fewer disks than the demo, you must have some kickin' data compression going on... Either that, or you're using 720K or 1.2MB diskettes for such a massive game.
Personally, I'm waiting for the 8" floppy version, or maybe a cassette tape / reel-to-reel magnetic tape version...