Hi Joby. There have been several star destroyers featured recently on The Brothers-Brick – here: http://www.brothers-brick.com/2016/08/24/massive-lego-star-wars-imperial-star-destroyer-is-2-2m-long-weighs-50kg-and-uses-42000-bricks/ and here: http://www.brothers-brick.com/2016/05/11/giant-lego-star-wars-imperial-star-destroyer-tyrant-features-incredible-interior/ which might provide some inspiration. Welcome to the group.