Jervis Bay class Super Battlecrusier

I've been asked to draw this kind of super battlecruiser ship.
I've yet to calculate the size of this monster but it is surely larger then the USN's largest warship proposal the 1250 foot long Battlecruiser of 1911-1912.

Design is based on several ships:
Hull: Design 1912, 1250 foot long battlecruiser, USA
Funnels and barrels: Tillman IV maximum battleship study, USA
Turrets: Nelson class, UK
Masts: USA
Secondary Guns: Nelson class, UK
Superstructure: Queen Elizabeth class, UK

Here is the description from the person who ordered it:
A story takes place in a fictional version of Montserrat. The capital city (and also the world's largest city) is Jarvis Town; and the main setting of 99.9% of the story. The city is divided into 8 Districts: District 1 (Scottish); District 2 (Kiwi (New Zealand) ); District 3 (Australian), District 4 (British); District 5 (Irish); District 6 (Canadian); District 7 (Welsh); and District 8 (American). District 3 is the Capitol District; and the countries defences.
The Montserrat Civilian Armed Forces of the People, have their main bases here. The hard point is the Jervis Bay Area, named after the great Montserrat Leader (and most powerful figure in the free world) Admiral Jervis. The Denison Civilian Air Force Base, and the Stoddard Island Civilian Naval Base are located here.
These ships are named for Jervis Bay; the Stronghold of Montserrat. Admiral Jervis only built 3; The HMAS Jervis Bay, The HMMS Cape Moreton, and The HMMS Cape York.

Coloured version is here:
tzoli.deviantart.com/art/HMMS-…