Have you looked at Gold Metal Model? I haven't built the Missouri but I read positive reviews on their version of PE for the Missouri while doing other research.
As for bulkheads, brass plating, etc. you will just have to make that call. Only you can decide what you want the out come to be when taking on the build.
You can't beat at minimum not having railings, proper gun shields, gun tubs, and to scale gun barrels on a ship, well aleast I can't. Fire hoses, cable reels, vent covers, etc., just seem to make a ship stand out compared to one without.
The only one who could overkill the build is you.