My alt does not yet have the Railway, so the GCC is irrelevant for him.
More pertinent matters for my alt: getting a ship, joining a club, raising money to buy a Semiotic Monocle and getting a 4-card lodging (hint: Christmas is coming).
Unless you are super lucky with your Upper River deck card reveals, to really progress with the GCC requires a large investment in scrips… which works against saving up for a Hellworm. Take note, newer players.