Are the unwraps anywhere near final quality? I'm asking because they are really very stretched and distorted with very uneven texel density. But then again if they weren't anywhere near final quality I don't see the reason for posting them. Either way it looks like the UVs could use a lot of work right now.
If the tiles will barely be seen up close you might want to simplify and exaggerate the details quite a bit as they might otherwise just read as noise from afar. If nothing else you'd at least want to make the bevels a lot larger. The bakes would probably also turn out better if some of your details were less perpendicular…
The head has some major texel density problems as you can see that the pattern is a lot bigger towards the bottom and outer parts. I don't really model characters but there must be a better way to unwrap the head than that. Several of the plates on the hull look pretty distorted as the pattern is curved instead of just…