You need to use File>Export and select RTF
Your text frames should all be threaded properly and the text insertion point active in the text frame.
That will export all the text.
If you have Anchored the images - I can't remember if they transfer across?
If they don't then use the FIle>Export and choose HTML
You'll be given options - head directly for the IMAGES tab.
Then set the Image resolution to 150 ppi.
That will export all the images.
Then reinsert them into the Word file.
For what it's worth - exporting directly to PDF automatically strips the Style Names -