Nice layout picture! I later managed to purchase the 7745 train set but still in need of the 7740 set I ordered some large windows (6 studs) which where not available elsewhere to reproduce, though in different colors, that much wanted set :)
Thanks for replying my question, I was inclined to choose PF as it seems a smarter way to control the trains, plus the tracks are in plastic and not in metal: cheaper? And I found out the wider radius curves are available for both types, 9V and PF, so my concern shifted to the way to control the trains.
Now the challenge moves to how to mockup properly the electric lines posts, but I will have to move to another thread of this forum for more specific questions.
Hope to read other suggestions, thanks again.