(This is not covered in the plans.)
I took the advice of Norm Muzzy and installed two small bulkheads across the floor ahead of the rudder pedals. The bulkheads partition off two areas that I can use for storing tools and additional ballast. The bulkheads were made from quarter inch foam covered in 1-BID and 2-BID taped to the floor pans, sides, and NG30s. I installed them approximately 8 inches behind the nose bulkhead.