Since my first post I have changed the layout to incorporate the town with the airport,train and monorail and new buildings.
Have taken over the whole room and have worktops on three sides. The Monorail was designed to run from the airport (Monorail terminal) above the station to the town at the other side of the room.
The station is below the airport and will be accessed via a lift opening at the airport terminal. Have also added a number of new modular buildings and extended the size and design of the Hotel and Hospital.