Another unsatisfactory attempt to make the Ideal Battleship work in Springsharp

I have been experimenting with Colonel Cuniberti's Ideal Battleship for the British Navy from the 1903 Jane's All the World's Fighting Ships. I had known since I got the detailed article that the design could not be implemented as originally specified. This is my current attempt in Springsharp. I couldn't see any way around having to increase the beam and decrease armor:

Ideal Battleship, Great Britain Battleship laid down 1903 (Engine 1909)

Displacement:
 18,872 t light; 19,767 t standard; 21,180 t normal; 22,310 t full load

Dimensions: Length overall / water x beam x draught
 521.50 ft / 521.50 ft x 87.00 ft x 26.00 ft (normal load)
 158.95 m / 158.95 m x 26.52 m  x 7.92 m

Armament:
      12 - 12.00" / 305 mm guns (8 mounts), 864.00lbs / 391.90kg shells, 1903 Model
   Breech loading guns in turrets (on barbettes)
   on side, evenly spread, all raised mounts
      12 - 3.00" / 76.2 mm guns in single mounts, 13.50lbs / 6.12kg shells, 1903 Model
   Breech loading guns in deck mount 
   on side amidships
   12 guns in hull casemates - Limited use in heavy seas
      6 - 1.85" / 47.0 mm guns in single mounts, 3.17lbs / 1.44kg shells, 1903 Model
   Breech loading guns in deck mounts 
   on side, evenly spread, all raised mounts
 Weight of broadside 10,549 lbs / 4,785 kg
 Shells per gun, main battery: 80

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 8.00" / 203 mm 350.00 ft / 106.68 m 16.00 ft / 4.88 m
 Ends: 6.00" / 152 mm 141.50 ft / 43.13 m 16.00 ft / 4.88 m
   30.00 ft / 9.14 m Unarmoured ends
   Main Belt covers 103 % of normal length

   - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
 Main: 8.00" / 203 mm 5.00" / 127 mm  7.00" / 178 mm
 2nd: 2.00" / 51 mm       -         -

   - Armour deck: 2.50" / 64 mm, Conning tower: 5.00" / 127 mm

Machinery:
 Oil fired boilers, steam turbines, 
 Direct drive, 4 shafts, 50,465 shp / 37,647 Kw = 24.00 kts
 Range 6,500nm at 12.00 kts
 Bunker at max displacement = 2,543 tons

Complement:
 877 - 1,141

Cost:
 £2.089 million / $8.357 million

Distribution of weights at normal displacement:
 Armament: 1,319 tons, 6.2 %
 Armour: 6,639 tons, 31.3 %
    - Belts: 2,467 tons, 11.6 %
    - Torpedo bulkhead: 0 tons, 0.0 %
    - Armament: 2,514 tons, 11.9 %
    - Armour Deck: 1,576 tons, 7.4 %
    - Conning Tower: 82 tons, 0.4 %
 Machinery: 2,294 tons, 10.8 %
 Hull, fittings & equipment: 8,620 tons, 40.7 %
 Fuel, ammunition & stores: 2,308 tons, 10.9 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   25,634 lbs / 11,628 Kg = 29.7 x 12.0 " / 305 mm shells or 2.8 torpedoes
 Stability (Unstable if below 1.00): 1.00
 Metacentric height 4.0 ft / 1.2 m
 Roll period: 18.2 seconds
 Steadiness - As gun platform (Average = 50 %): 47 %
   - Recoil effect (Restricted arc if above 1.00): 0.99
 Seaboat quality  (Average = 1.00): 1.08

Hull form characteristics:
 Hull has rise forward of midbreak
 Block coefficient: 0.628
 Length to Beam Ratio: 5.99 : 1
 'Natural speed' for length: 22.84 kts
 Power going to wave formation at top speed: 55 %
 Trim (Max stability = 0, Max steadiness = 100): 40
 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:  29.00 ft / 8.84 m
    - Forecastle (37 %): 28.00 ft / 8.53 m
    - Mid (50 %):  28.00 ft / 8.53 m (19.00 ft / 5.79 m aft of break)
    - Quarterdeck (15 %): 19.00 ft / 5.79 m
    - Stern:  19.00 ft / 5.79 m
    - Average freeboard: 23.65 ft / 7.21 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 81.5 %
  - Above water (accommodation/working, high = better): 158.6 %
 Waterplane Area: 34,072 Square feet or 3,165 Square metres
 Displacement factor (Displacement / loading): 97 %
 Structure weight / hull surface area: 175 lbs/sq ft or 855 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.93
  - Longitudinal: 2.04
  - Overall: 1.00
 Hull space for machinery, storage, compartmentation is excellent
 Room for accommodation and workspaces is excellent