I wish there were a way to automate the entire process to add the nodes to all content within a scene, but alas! Although it is time-consuming, I tend to work on my sets a piece at a time, saving each one after completion as a partial scene and then importing them back into Poser for the final render. It helps to save chunks of nodes in the Materials tab for easy application and build on those with the different texture maps. Everything becomes routine after that.

Since I only render in Superfly and use PBR/procedural textures, I've modified all my lighting to use the Blackbody node. By adjusting the Kelvin temperature on that node, I can simulate any natural lighting condition.

In testing the ambient occlusion node with the PhysicalSurface node, I found that there are limitations to the effect. I can't make the shadows grow beyond a certain, and trying to use the RGBramp node with it is next to impossible. There are some problems with the RGBramp node, which I reported to tech support. Under certain conditions, the color slider would shift randomly for no apparent reason. More annoying.