Before you start your long running final rendering process, you should do a test render to see what you will get from hours of rendering. You should do a test rendering for each new scene that shows a new part of your model or contains proxy components that are not well represented in the SketchUp 3D scene window.
You are ready to do a "dress rehearsal" of your final render just to smooth out any other issues and make final changes. This will be a version of your final render, but at a lower resolution and with lower quality settings.
If you have created a dedicated file for your daylighting scene, open this now: