You said you needed help with the lighting. Did you mean help as far as lighting the whole map?
Have you tried this:
It would only work for the areas that are visible by the sky, so the inside of the Star Destroyer still has to be lit manually, but it really makes outdoor lighting a lot easier. Plus, you could get good, fluid, ambient lighting all around the Star Destroyer.
I don't know if that's what you meant when you asked for lighting help. (I know monsoontide has been giving tips about the compiling half.)
It also makes the compiling process faster (for me at least).
Hope you can find that helpful.