I'm with BB 1987 here, apart from one problem. your ship looks of WW1 origin. due to structural constraints of that era, you get size limitations. I would look at queen elisabeth class ships for dimension myself, both in arnament, armour, speed and size. I consider these the ultimate evolution of the WW1 dreadnought (there was an reason they were called 'super dreadnought')
reason was they had superfiring turrets