I don't know what equipment you'll be running, but the center-to-center clearance for the tracks just above the passenger station is only 2.75". That might be a problem for long passenger cars and engines passing on the curve going in opposite directions.
I can see why it's there, but the small "S" curve above and to the left of the factory might also cause some problems. There's another one above and to the left of the passenger station, but there's a short straight in there to ease things. Since you're cutting track and switches, you might consider moving the switch up a bit, so the curve goes right into the straight run.
