Thanks again, I'm spoiled for choice now!
As it goes, work has just exploded, so I'll have some time to ponder on this before I get the time to actually get the prints done, framed and mounted.
Definitely tending towards multiple photos now though. Maybe three on top, two underneath.
I'm very grateful for all who have replied, I never expected such a great response. Every time I reply to thank someone, it bumps the thread, so I think I'll leave off on the thanks for now, and post something up in a week or two when work's settled down.