It depends what the market for the book is - this level of detail with well-drawn pictures would make it a very attractive coffee-table book that you could read at your leisure and even non diving friends could find interesting.
That said, new facts get discovered and wrecks detoriate so the picture may not be an accurate reflection in another 3 years and someone may have discovered something else that identifies the wreck as a different ship. That might make it less useful as a guide that you would use when actually diving the wreck.
But I have been waiting for your book for a while with some interest and I would definitely buy it as a coffee-table book - so in that sense for me it was worth it
Cheers, Ant