Phil - I just caught up on reading the last 3 pages / 3 months' worth of posts.
I really like the raised level corner station - a great way of hiding the curves around the corner. Also, I think 'height' makes layouts look more realistic.
You could keep all the photos and get it made into a photobook using Snapfish (other online photo services are available), then when you show people the railway and they want to know more, you can fish out the book!
Jon