I am thinking of having a reversing track segment like the Village Street Car set but I don't want a trolley car. Much like the Bach Man's layout with its reversing mine track, I would like to have a MOW engine with a flat car or two running back and forth using the street car controller electronics. I know I can get the reversing track sections separately but can I run from 10 to 12 feet between the reversing points? And do I need that 'trolley barn'? And if so, what function does it provide?