A little more news:

I finally managed to get the English narration. :)
So it will be included also. Thanks to Brumme for the lead, which ultimately worked out.

Another note for Tobbeo, who was concerned about the pal speedup:
Well, as you may know, I was able to attend a theatrical screening of this, and the funny thing is that it was the same pitch as most other versions I know of. The only version I have heard with a lower pitch is the Chinese ntsc bootleg dvd - even the official Taiwanese ntsc dvd runs at the same speed and pitch as the pal versions (may be due to shoddy manufacturing though). So it's not entirely clear how it's supposed to sound in the first place... Maybe what you'll be getting in my version IS the correct pitch?