Thanks all for your feedback, which was invaluable in making up my mind.
In the end I went for "Standing Proud", "Photographers at Work" and "A Hand Held Record of a Photographers Lunacy". I would have gone with "Looking for Lunch" but on closer inspection at full screen resolution a fair bit of 'noise' was evident from slightly over cropping the image. This would have been magnified too much when projected onto the big screen so I left it out.
Taking Jan's comments on board, I did go back to the moon and played about a bit with the contrasts and I'm fairly pleased with the end result. Whether the judge on Tuesday is, is another matter.
The difference between fiction and reality? Fiction has to make sense.