Welcome
As to the rebuild I would play with it a bit more, what about ?
- anything you add (DARDO etc) should be recoloured to match the ship.
- I would swap all the radars (on masts and directors) for newer (well cold war) kit as the WW2 stuff will not be supported and second hand WW2 kit will be much better. (you might just cut them off a cold war missile rebuild ?)
- Swap directors for newer systems ? old will be very expensive in men and repair time.
- I would lose more of the 5"/38s as they are really only capable of surface fire (and you have 6" for that) as air targets have been getting faster and harder to hit since WW2, so mounts will do and free up space for helicopter and more computers (options for 4 or 3 ? just keep side mounts or rear sides and front mount ? or less ?) (or go and swap them with 76mm singles when you buy the DARDOs from OTO ?)
- is RAM to expensive and new ? maybe just the DARADO will do if you are going for the cheap old stuff navy look ?
Anyway keep going and good luck