Now I suppose I'd better polish the book, which doesn't sound too difficult given the three month time frame, but it does add a bit of pressure. According to Smashwords it's not a huge problem if the book isn't ready. They automatically move the release date out until the manuscript is uploaded. If I was a buyer, however, I wouldn't be too impressed with repeated postponements, so I'll make sure it's ready and up to scratch.
As you can see I decided to go with J.K. and the West Pier book cover. I would be interested to know if anyone has tried the pre-release strategy and how it went for them. Any other marketing tips would be much appreciated as well. With three months to play with, I might as well throw everything at it.
Jack / J.K.