I don't like how single mounts work for the GB/CL/1914, so I've revised the design

I have a drawing for the GB/CL/1914, in its original form, and don't like how much space single mounts take, when they are all on the centerline. I've revised the design to use twin 7.5in mounts. That is the only change, for now. This is the new Springsharp report:

GB/CL/1914 A2, Great Britain Cruiser laid down 1914 (Engine 1921)

Displacement:
 9,578 t light; 9,983 t standard; 11,112 t normal; 12,016 t full load

Dimensions: Length overall / water x beam x draught
 582.98 ft / 580.00 ft x 60.00 ft x 22.00 ft (normal load)
 177.69 m / 176.78 m x 18.29 m  x 6.71 m

Armament:
      8 - 7.50" / 191 mm guns (4x2 guns), 210.94lbs / 95.68kg shells, 1914 Model
   Breech loading guns in deck mounts with hoists
   on centreline ends, evenly spread, all raised mounts - superfiring
      8 - 4.70" / 119 mm guns in single mounts, 51.91lbs / 23.55kg shells, 1914 Model
   Quick firing guns in deck mounts with hoists
   on side, all amidships, all raised mounts - superfiring
 Weight of broadside 2,103 lbs / 954 kg
 Shells per gun, main battery: 150
 4 - 21.0" / 533.4 mm above water torpedoes

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 4.00" / 102 mm 400.00 ft / 121.92 m 17.00 ft / 5.18 m
 Ends: 3.00" / 76 mm 100.00 ft / 30.48 m 17.00 ft / 5.18 m
   80.00 ft / 24.38 m Unarmoured ends
   Main Belt covers 106 % of normal length

   - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
 Main: 2.00" / 51 mm       -         -
 2nd: 1.00" / 25 mm       -         -

   - Armour deck: 2.00" / 51 mm, Conning tower: 5.00" / 127 mm

Machinery:
 Oil fired boilers, steam turbines, 
 Geared drive, 4 shafts, 70,580 shp / 52,652 Kw = 30.00 kts
 Range 7,500nm at 15.00 kts
 Bunker at max displacement = 2,033 tons

Complement:
 540 - 703

Cost:
 £1.141 million / $4.563 million

Distribution of weights at normal displacement:
 Armament: 263 tons, 2.4 %
 Armour: 2,316 tons, 20.8 %
    - Belts: 1,314 tons, 11.8 %
    - Torpedo bulkhead: 0 tons, 0.0 %
    - Armament: 84 tons, 0.8 %
    - Armour Deck: 864 tons, 7.8 %
    - Conning Tower: 54 tons, 0.5 %
 Machinery: 2,430 tons, 21.9 %
 Hull, fittings & equipment: 4,569 tons, 41.1 %
 Fuel, ammunition & stores: 1,534 tons, 13.8 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   15,933 lbs / 7,227 Kg = 75.5 x 7.5 " / 191 mm shells or 1.8 torpedoes
 Stability (Unstable if below 1.00): 1.12
 Metacentric height 2.9 ft / 0.9 m
 Roll period: 14.8 seconds
 Steadiness - As gun platform (Average = 50 %): 80 %
   - Recoil effect (Restricted arc if above 1.00): 0.94
 Seaboat quality  (Average = 1.00): 1.60

Hull form characteristics:
 Hull has rise forward of midbreak
 Block coefficient: 0.508
 Length to Beam Ratio: 9.67 : 1
 'Natural speed' for length: 24.08 kts
 Power going to wave formation at top speed: 54 %
 Trim (Max stability = 0, Max steadiness = 100): 50
 Bow angle (Positive = bow angles forward): 2.00 degrees
 Stern overhang: 2.00 ft / 0.61 m
 Freeboard (% = measuring location as a percentage of overall length):
    - Stem:  28.00 ft / 8.53 m
    - Forecastle (20 %): 26.00 ft / 7.92 m
    - Mid (67 %):  26.00 ft / 7.92 m (18.00 ft / 5.49 m aft of break)
    - Quarterdeck (15 %): 18.00 ft / 5.49 m
    - Stern:  18.00 ft / 5.49 m
    - Average freeboard: 23.52 ft / 7.17 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 89.8 %
  - Above water (accommodation/working, high = better): 180.4 %
 Waterplane Area: 23,357 Square feet or 2,170 Square metres
 Displacement factor (Displacement / loading): 120 %
 Structure weight / hull surface area: 108 lbs/sq ft or 527 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.92
  - Longitudinal: 2.25
  - Overall: 1.00
 Hull space for machinery, storage, compartmentation is adequate
 Room for accommodation and workspaces is excellent
 Ship has slow, easy roll, a good, steady gun platform
 Excellent seaboat, comfortable, can fire her guns in the heaviest weather