I'm Glad to announce I've managed to finish blocking out the station part of chapter one.
Important to note that in HL2 the station alone takes two levels. I chose rather than short levels, A full chapter in one level would be better, Meaning I can reuse bits of the level such as the train-tracks
(Start of game and after Klieners lab) and best of all, I can create a vista of the entire chapter before you descend into it's chaos
Check out the bigger picture of the station overview in the image section