Larry - not surprised you have done this.
Our two projects are remarkably similar, we have both chosen a branchline setting, I have chosen Arley in O gauge, but think of it slightly differently - it is a series of dioramas interlinked.
Arley station - Diesel shed, shunting area with goods shed, Victoria Bridge and a steam shed with turntable, not shown on the control panel, so lots to keep you happy depending on whether you want to run trains, shunt or move locos around.
If you can drop a camera down on the track and it looks like Carrog from that view then it is a complete success, then by turning the camera round you get a completely different view.
Here is some video from 1960s weekend at Carrog.
And some links to pics
https://flic.kr/p/WNABKn
https://flic.kr/p/WMHvTz
https://flic.kr/p/WVVNgs
https://flic.kr/p/WVVdGd
https://flic.kr/p/VHhsw9