I'm intending to take Kiya's advise and just roll a new character whenever I hit a wall. (Or more likely, lose too much karma.) So, I'll probably be playing this over the course of quite a few sessions. Eventually I'll release all these archives from private mode on my youtube channel, if you want to check them out at your leisure, though.
Also, this is the last game on either of the Falcom Classics Collections that I still haven't beaten. Best I've done is like, floor 3, I think.