Holly,
I believe that before you get started again, you need to do some soul searching here.
Ask yourself: "Am I trying to build a nice and versatile train layout, with Christmas buildings added as a scenery theme? "
"Or, am I trying to build a really dense, jam-packed, Christmas village, with a train that is just one of the cute featured accessories?"
I believe that right now, you are on the second option.
Mannyrock