My preprepared answer is exactly one page typed. I have used it for 2 exams, and i received a 13 and a 14 for it; keeping in mind that when i wrote it in the exam, it wasn't word for word with what i had prepared. So if you feel what you have written successfully conveys the message you are trying to achieve about imaginative journeys (or journeys, i don't think it specifies IJ), then i think you will be fine. You can always adapt it to the particular question tomorow. Good luck hey!