Good news, Fedorajoe! You'll be happy that I've discovered that there was a Final Fantasy IV: Golbez hack made by Paladin which has a fully playable Golbez predating your Final Fantasy IV: Playable Golbez Hack. That's where many of the playable Golbez sprites come from. It may be outdated, but it may be useful for your next version of Final Fantasy IV: Playable Golbez Edition. http://thepatrickinator.deviantart.com/gallery/59015259/Final-Fantasy-IV-Playable-Golbez-Edition
is the site that has pictures dealing with ideas for your next version of Final Fantasy IV: Playalbe Golbez Edition.