on first glance, I think the ship would have grown bigger then the drawing here, or an switch to 3 turrets, possibly even with an 2-aft arrangement. the turrets as of now look huge compared with the rest of the ship, and if we compare it with the iowa which carried 3*3 16in guns but which were longer (this, of course, partially because of their higher speed, but that separate) it seems like 3 twins on an hull this size seems to be the maximum for this ship.
an tryout with only 2 tripple turrets might be interesting too