A question about the GB/CB/1914 Fast

I may be the only one "out there" to ask this question, but it occurred to me immediately after yesterday's design was posted. The question is if we restricted the machinery to "normal weight" for the date and restricted power to the specified 180,000 SHP, how fast would the GB/CB/1914 Fast be able to go? The apparent answer is "34 knots". I was apparently overly ambitious with my "38 knots" speed estimate for 29,000 tons and 180,000 SHP. This is the revised Springsharp design:

GB/CB/1914 Fast, Great Britain Battlecruiser laid down 1914

Displacement:
 25,495 t light; 26,408 t standard; 29,347 t normal; 31,698 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
 (854.64 ft / 850.00 ft) x 95.00 ft x (30.00 / 31.63 ft)
 (260.49 m / 259.08 m) x 28.96 m  x (9.14 / 9.64 m)

Armament:
      4 - 13.50" / 343 mm 45.0 cal guns - 1,400.00lbs / 635.03kg shells, 90 per gun
   Breech loading guns in turret on barbette mounts , 1914 Model
   2 x Single mounts on centreline ends, evenly spread
      16 - 4.00" / 102 mm 50.0 cal guns - 33.88lbs / 15.37kg shells, 150 per gun
   Quick firing guns in deck and hoist mounts , 1914 Model
   8 x Twin mounts on sides, evenly spread
 Weight of broadside 6,142 lbs / 6,142 kg

Armour:
   - Belts:  Width (max) Length (avg)  Height (avg)
 Main: 6.00" / 152 mm 475.00 ft / 144.78 m 16.00 ft / 4.88 m
 Ends: Unarmoured
   Main Belt covers 86 % of normal length
   Main belt does not fully cover magazines and engineering spaces

   - Torpedo Bulkhead:
  1.50" / 38 mm 475.00 ft / 144.78 m 30.00 ft / 9.14 m

   - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
 Main: 7.00" / 178 mm 5.00" / 127 mm  7.00" / 178 mm
 2nd: 2.00" / 51 mm 1.00" / 25 mm  2.00" / 51 mm

   - Armour deck: 2.00" / 51 mm, Conning tower: 7.00" / 178 mm

Machinery:
 Oil fired boilers, steam turbines, 
 Geared drive, 4 shafts, 178,226 shp / 132,956 Kw = 34.00 kts
 Range 8,500nm at 15.00 kts
 Bunker at max displacement = 5,291 tons

Complement:
 1,120 - 1,457

Cost:
 £3.022 million / $12.089 million

Distribution of weights at normal displacement:
 Armament: 1,178 tons, 4.0 %
 Armour: 5,644 tons, 19.2 %
    - Belts: 1,959 tons, 6.7 %
    - Torpedo bulkhead: 791 tons, 2.7 %
    - Armament: 882 tons, 3.0 %
    - Armour Deck: 1,868 tons, 6.4 %
    - Conning Tower: 143 tons, 0.5 %
 Machinery: 6,865 tons, 23.4 %
 Hull, fittings & equipment: 12,366 tons, 42.1 %
 Fuel, ammunition & stores: 3,851 tons, 13.1 %
 Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
 Survivability (Non-critical penetrating hits needed to sink ship):
   42,345 lbs / 19,207 Kg = 34.4 x 13.5 " / 343 mm shells or 5.1 torpedoes
 Stability (Unstable if below 1.00): 1.31
 Metacentric height 7.5 ft / 2.3 m
 Roll period: 14.6 seconds
 Steadiness - As gun platform (Average = 50 %): 73 %
   - Recoil effect (Restricted arc if above 1.00): 0.36
 Seaboat quality  (Average = 1.00): 1.46

Hull form characteristics:
 Hull has low quarterdeck ,
   a normal bow and a cruiser stern
 Block coefficient (normal/deep): 0.424 / 0.434
 Length to Beam Ratio: 8.95 : 1
 'Natural speed' for length: 29.15 kts
 Power going to wave formation at top speed: 49 %
 Trim (Max stability = 0, Max steadiness = 100): 50
 Bow angle (Positive = bow angles forward): 8.00 degrees
 Stern overhang: -2.00 ft / -0.61 m
 Freeboard (% = length of deck as a percentage of waterline length):
    Fore end,  Aft end
    - Forecastle: 20.00 %,  33.00 ft / 10.06 m,  28.00 ft / 8.53 m
    - Forward deck: 30.00 %,  28.00 ft / 8.53 m,  27.00 ft / 8.23 m
    - Aft deck: 18.00 %,  27.00 ft / 8.23 m,  27.00 ft / 8.23 m
    - Quarter deck: 32.00 %,  19.00 ft / 5.79 m,  20.00 ft / 6.10 m
    - Average freeboard:  25.35 ft / 7.73 m

Ship space, strength and comments:
 Space - Hull below water (magazines/engines, low = better): 117.0 %
  - Above water (accommodation/working, high = better): 234.5 %
 Waterplane Area: 50,485 Square feet or 4,690 Square metres
 Displacement factor (Displacement / loading): 121 %
 Structure weight / hull surface area: 162 lbs/sq ft or 790 Kg/sq metre
 Hull strength (Relative):
  - Cross-sectional: 0.96
  - Longitudinal: 1.36
  - Overall: 1.00
 Hull space for machinery, storage, compartmentation is cramped
 Room for accommodation and workspaces is excellent
 Ship has slow, easy roll, a good, steady gun platform
 Good seaboat, rides out heavy weather easily