Heh, good luck with Gohma.
I'm making a Gohma engine in rm2k3 too, right now I'm in the process of splitting Gohma into 16x16 blocks and putting them into charsets.
...actually, I could just use pictures for Gohma and have a bunch of blank charsets around her for collision...
I don't know, I'd have to test it out. But good luck