Very impressive Doirche. I followed the threads on the BIP board a bit, and if I understand it right, level 8 and 9 are going to be double sized? Good Heavens, if level 7 is normal sized, I can't begin to imagine all the stuff you can squeeze in with twice the space--good luck.

(note IANAL) If Wizards does send you a c&d, try redoing it to be more like the Dungeon Under the Mountain. They've pushed out 6 or 8 levels and they have not been sued or enjoined.