DIM has always worked for me.  I don't agree advicing against it; it's the quickest way to load content files without carrying over the content folder.

Create 2 new folders, one for your DAZ content, the other for the Poser Companion files.  Link both to your Poser Library (do not move the runtime folder from the DAZ My Library folder.  Poser needs to find that one).  Using DIM, set your preferences to point to the correct folder and decompress the content files.  Poser Companion Files need to cross reference DAZ files through DSON unless you use D3D's DSON Loader.