Gaaaah! *runs around in several circles*
Okay, calm down, deep breaths ... I know generally what kind of monsters I want to use, and I know what the "big events" are gonna be. So all I need is a map, stats, and a few details. Basic layout of the wizards' guild I've got, so that leaves rough outlines of the organization, names and a couple of touchstone traits for the guild members who are around when the PCs get there.
Miniatures I wanted to paint, alas, are not painted. But we'll survive that.
This adventure is primarily a big honkin' dungeon crawl ... which fortunately is easy to do off the cuff.
Okay. I can cope.