I hear you on the ambition.
My first published adventure was trying to do my own riff on The Stygian Library, which no one but Emmy Allen has ever been able to pull off, and I'm no different. But better to make big swings than to just say "here's a 10 foot room, with an orc and pie in the middle of it."
Your adventure is very good. I would strongly consider a second draft once the judging period is over to let it shine -- and you can get around the four-page restriction at that point.