Most people who' posted their buildups to their sites or others' usually build it complete without the cutaway features. I have one I'm rebuilding right now; it never utilized those features and never will. Nor will the 2-3 other ones in the closet.
The only full deckplans available are either the old Franz Joseph ones or the FASA game deckplans for that RPG. Both may be hard to find these days.
You could be the first one to build decks into the Cutaway!! If so, good luck!!