The key problem with this ship, as has been mentioned already, is the subobject limit. Like it or not, FS2 has a 110 odd subobject limit, and you're not going to be able to effectively turret a ship 17 odd kilometers long with the 90 - 100 turrets you'll have left once the detail boxes and destroyable subobjects are done. In the old SW mod, the plan was to use this ship as a plot device - you might see it, it might kill a few ships at a great distance, or it might be a part of the background of a mission, or in a shipyard or something, but it would never be deployed as a standard combat ship. It's unkillable (or at least it ought to be) and thus plays hell with non scripted mission parts, and makes turreting it unneccesary. My advice, then, is to get it modelled and mapped but not to bother turreting it at all. If we need it to kill something, I can sort that out in FRED, but trying to treat something like this as a standard combat vessel is a recipe for, well, if not outright failure, certainly falling far short of what should be expected for a ship like this.
