Seems strange to do a kitbash of my own drawing
Anyway, this is my take on an E class cruiser conversion with twin 6" replacing the single 6". The biggest problem I can see with this is to get the aft twins as far forward as possible so that the barbettes, handling rooms and magazines do not interfere with the inboard shafts. The E's were very narrow aft so this was a priority.
As it is now is like an Arethusa on steroids to get the extra 1 1/2 knots of speed.
Armament at this stage of career:
6 x 6" (6x1)
8 x 4" (4x2)
8 x 2pd (2x4)
12 x 0.5" mg (3x4)