I am setting out to completely redraw and reorganize all of the solid works files at my small company. We do not have pdm and do not currently have plans to get it or learn it.

What makes sense to me for organization for our products feels completely backwards from what I read is conventional. 

All of our products have different levels of shared components. I have a directory named 'vendorStockParts' - top level shared with everything, and then different levels of 'manufacturedStockParts' and 'manufacturedParts'. We have parts that we manufacture but do not stock and get made per assembled part. 

In order to have a single file for every part, rather than duplicate files with each assembly, the organization that feels most practical to me puts the assemblies at the bottom directory and the parts above it. The assembly is not shared so having it on the top doesn't make sense to me.

This way I feel I can stay organized. Currently my deepest directory is 5 levels.

I also don't like having parts and drawings in the same directory. I like to drill down to what I am looking for rather than have a bunch of files in a single directory.

I am looking for opinions on whether I am heading down a bad path and if there are good resources available that explain how and why a file structure should be set up.