Dirk Stanley (Mr +Far Away Land RPG himself) posted some thoughts on his blog about adventure length and how he feels some of his later adventures are bloating in page count.
To me, it's not the number of pages in an adventure that is the yardstick but how concise the textual descriptions are. The more verbose a room description is, the less useful I find it. If I cant tell what's in the room at a quick glance, it does me no good. Mini adventure or mega dungeon, keep the room descriptions short and concise.
So, where do fall? Concise? Verbose? Midling?