Turning and Reordering Pages in PDF file

Sometimes I get a scanned magazine article in a bunch of randomly named PDF files, each containing a double page. Put them in the inbox, unite them and then I have to go through this file and reorder/turn the pages.

Is there a way to do this using the keyboard only, f. e. tabbing to the thumbnails view and using an arrow+modifier key to reorder …

You could add your own shortcuts (see System Preferences > Keyboard > Keyboard Shortcuts > Apps) to the commands Edit > Rotate Left/Right.