OK then my givens are that I am sticking to a theme of Coeur d’Alene Railway and Navigation company in 1:20.3. I will run prototypical equipment. It must be looped operation and build-able in phases. I would say a min of two loops I m pretty firm on. The signal tower is also a must no getting rid of it. The space is the most important given. I can’t go beyond this and it dictates what can be built.
Druthers, I want lots of crossovers that are either bridges or tunnels. I want them over even buildings. The prototype had lots of river and creek crossings (no tunnels but I think I have to have at least one). various buildings would be nice with associated sidings. The prototype ran from mine to mine picking up ore and taking it to the steam boat. This should be represented. They had no yard or complex tracking.
Hope that helps.