I have mapped and monstered floor 9 of the Pit, and have mapped the Zaldach Tower (for the Magic Key quest).
My original plan was for a depth of 16 floors, divided into 4 areas (Temple, Catacombs, Caverns, Hell) - and I'm keeping to it. That leaves 7 floors to map and monster. At my current pace, which is about a floor every two days (monstering is tedious), I will complete the game in 14 working days. Based on my schedule, I ought to be done by September 4th. But we'll see...
I've monstered the Zaldach Tower and mapped the 10th floor of the Pit. It's pretty cool - a giant subterranean lake surrounded by swampy ground. Somewhere on this floor is the Dragon Ore...