Ok I think it's done but there's one little problem that I can't solve. I imported custom images and project them using a decal, but they are completely shadowed. It doesn't matter if I put a light right next to it, it won't light up. I can fire next to it and the muzzle flash will display the image. So there is a setting somewhere that I need to find. Is it something in the material editor or the decal itself?
I have tried it without anything selected in this box and same problem persists.
I optimized the map best I can think of, lowered the light res on everything including buildings, removed shadows on some objects. Got it down from 500mb cooked to 269mb. I can't think of anything else to remove.