Southern Pacific Switching Layout

[faraway]

I'm still going to go with Peco large radius, I have the space for them and I like to have as smooth flowing track as possible.

Bravo!
I did a quick shot comparing Atlas #4 and #6. I used a 50' boxcar and a GP60M to demonstrate the ugly angle between engine and car. Even #6 is not a dream, it is a compromise...