top weight:
CEAPAR and CEAMOUNT are very light systems at the array level, so I'd imagine that, like the real life ANZACs, the mast structure is mostly hollow.
You are correct about the old parts, but these ships show some thought. What navy are you in Leut_EAST (I can't tell from the cap, but I'd guess RAN)?
This is good drawing and I am very close to moving it out of the beginner forum.
Here is an example of some areas that need to be cleaned up: I've replaced all of the true black and true white with green and pink respectively. Clean those up (by replacing the not-black with black and the not-white with white) and you're good to go.
Pre-post edit: You do need to show Harpoons above the launchers, but that's a minor and easy fix.
Also the text: anti-aliasing should be turned off, but again, that's a minor thing (and really only comes up for designs that get uploaded, but a nice side effect is that non-anti-aliased text reduces the file size.)