I primarily used these four references.
I preferred the second layout, and stuck most closely to it. It's the most logical layout of the bunch, though it still has some wasted space. Unfortunately 1-meter-thick walls (and no diagonal placement on a round ship) make it impossible to fit everything in, so I modified it, pared it down to the essentials and also added the two things that are ignored on most of these cross sections - a galley and a head. (Or a kitchenette and a toilet for the nautically disinclined) Overall dimensions for this hull (minus guns, radar, floodlights, etc) is 36m x 27m x 7m which seems to be about the accepted canonical size. (debates range between 34 and 37 meters length)