Okay, update!
I installed all the guns and the full LOD0 polycount shot up to 24,604. That's LOD0. Just take away all the guns and you get 17,000.
So the LOD plan is this:
LOD0: at 4500 m (a little more than 1/2 ship length) you see the whole thing. Guns, greebles and everything else.
LOD1: at 4500-9000m you see only the greebles. The guns turn off, and reduce the poly count.
LOD2: at 9000-18000m there will be only the base hull. No greeb or guns. I may change this to LOD3 and make LOD2 be where the greebles get flattened out into single planes to reduce greeb poly count by 3/4ths.
So far there are 169 different guns on board: 84 Light Advanced Lasers, 58 Advanced Lasers or AAA guns, 12 beams of TerSlash or similar class, and 15 primary beam cannons similar to LRBGreen.
This ship is not to be underestimated.
The advanced laser is an upgrade to the standard terran laser turrets. They have been upgraded with higher velocity and more punching power to make them effective at engaging anything from a fighter to another juggernaut.
There is a weakness, however. There are no guns guarding the gap between the forward spires. enter there and you can pick this ship apart. It's kinda like the Death Star. Get past the outer defenses and only another fighter can stop you.