True enough, Zephyr, and it proved a most cumbersome, impractical arrangement in the Kearsarges and the Virginias!
However, you have compounded all the existing (and, at the time known) deficiencies, by, among others, creating an almost impossible ammunition and propellant supply, by extending or doubling chutes (which, in turn, would be very difficult to adequately protect, since at the time of the inception of your design, flash-proof doors would not have been invented.)
Another, less obvious drawback, and a very serious one, is the extremely low freeboard to the lower gunbarrels, which will cause pitching and disabling sprays to form; not to mention how the lower gun deck will be literally swamped by water, especially at high speed (22.5 - 23 knots?) The Duke of Edinburghs were notoriously known for their low secondary gun-battery command, and were handidly defeated repeatedly in fleet excercises, where they went into close combat (range 3,000 to 6,000 yards; a distance that, at the time, was expected to occur).
So, your last cruiser already in its design has two serious flaws, effectively strikes against it. It is, in a very literal sense a floating coffin!
And, Zephyr, I still don't think putting the conning tower on top of your pilot house is a very good idea. My suggestion: Swap them, and you can even either elevate the pilothouse slightly to increase the clearance to the CT, or you can put the CT in front, but below the PH.
_________________ My Avatar:Петр Алексеевич Безобразов (Petr Alekseevich Bezobrazov), Вице-адмирал , царская ВМФ России(1845-1906) - I sign my drawings as Ari Saarinen
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