Mopac I still have a dry cough but nowhere near as before. Thanks for asking.
As to those K-Line curves didn't know you had gotten so much. My entire main lines are new K-line or Lionel (after they bought K-Line) even though I have a ton of AF track. I used K-Line new because I wanted the shiney rail head prototype look. As to you building a layout, go for it and do it to the best of your ability. Didn't you say you had an HO layout once? I have done 3 HO layouts in the Athern "Blue Box" era, or pre DCC, many years ago when I didn't have as much room as I have now for my Flyer layout. I just bought Flyer at random whenever I found it. I used the same building techniques when I built what I have now only adjusting for the S gauge difference. I learned a long time ago to not try to copy or compare what I have to another person's layout. Not saying I don't change something that I have seen in a magazine or copied a structure. Just like cars, there will always be somebody better. Just get started! Your railroad, your layout style.
I will say I use Tom's layout for inspiration. I my humble opinion his is the gold standard on the Forum.