Thanks!
It is not complicated at all. My layer setup is very simple:
The Section line work reference goes on a layer I name RCP linework (modify for type of drawing)
SU reference goes on a layer named SU Reference
The grids are on a layer called grids
The notation is all on one layer called notation.
You can add more as needed, but isolating these individual layers is what you see on the RCP above. You then position the layers in order of visibilty and lock as needed. I typically keep all reference layers locked and only unlock to update.
As for model scenes, they are just each section or plan view saved as a separate scene. For plans that require many sections, I will typically create a separate SU file and reference in the base model. This way you don't end up with 15 section planes in a given model.
So far so good on this method. Rendering time is pretty much instant for both the raster and vector linework. I have used this method now for all my plans, reflected ceiling plans and building sections. It works great!