Have you looked at getting the correct pdf ppd driver for your printer from the Gutenburg Project? The pdf drivers depend on the printer and it’s best to get the ppd from them because it will work for your cups printer.
If it’s a native pdf printer, any of suse9’s pdf drivers should work, otherwise you need the correct ppd for the printer. (Just copying a pdf file to the pdf printer pot should give a printout for a native pdf printer.) The correct ppd gives the extra options available for the printer like page sizes, resolution, etc.