If you need any help with my mod, feel free to drop me a line on IRC on irc.esper.net, nickname UltraMoogleMan - I'll be more than happy to help! Just be aware that I do have a day job, so I'm often AFK.
Wow, this is a damn good world generator! Just a few things, the Done button on the preview screen goes offscreen in some resolutions, so if you could make it so that the preview would close once you simply click on it, that'd be great. Also the generation seems to stop at y=128. I don't know if it's even possible with Minecraft generation, but it would be awesome if you could make it go all the way to 256.