Pony Fantasy VI Remake

FF3usME already has functions installed for that particular expansion. It'll move the existing script to the end of the new expanded space (bank $FE if I recall, $FF is reserved for something else I believe?). You may want to consider the other expansions it offers as well.

Should be a button labeled "Expand ROM" right on the main program page for usME. Once it expands the rom, you select "Manage Expanded ROM" and follow the instructions beyond that.

Note that in my rom the map expansion seems to interfere with the dialogue expansion. No idea why or if it's something I did at some point long ago. Might want to test though.