I have also been playing around with the track plan. My other half got me several track plan books for my birthday and i saw one called Nelson, the book is called PSL Book of Model Railway Track Plans and is by Cyril Freezer.
I have done a crude mock up here as i dont know if i can just add pictures of the plan from the book without seeking permission from the publisher first, so better safe than sorry!
I like the overall plan, it includes the features i wanted to add there is just one or two small things to tweak, like an addition of a turntable so that the Jubilee and Patriot can be turned if I want to, but this should be relatively easy to add.
I also might have the layout curve somewhat so that i can get some more scenery in to the left hand side before it runs to the fiddle yard, but again, this shouldn't pose too much of a problem to do.