HI Darren and Melissa --
We have a 23LB and find the storage ample for our needs. The under bunk storage can be accessed thru the cabinets and the outside door (you probably already knew this). The area below the bunks is the size of a small bunk, so it extends back farther than we can reach thru the cabinet doors. The outside storage door is large enogh for our camping chairs, table and the front lawn (astroturf). It is fairly tall so we stack stuff beck there.
Good Luck with your decision!