Such is the life of a model railroader. We just can’t put everything into a layout we would like to have and still make it believeable, even if we have a large space to work in. There’s always something that logically just won’t fit in with everything else we want in our layout. So there’s two choices, pick the approach that has the most elements you want or be illogical and put all the things together that you want, even if some of them don’t belong in the same place or era. Actually, there is a third alternative. If you can make the setting generic enough, you can swap out your railroading equipment between two eras or locales.
Good work there.