Firstly,
Audio you can put a limiter on all your tracks but it’s better to just adjust it yourself when you do your audio mix.
As for your levels, there is no setup in DV so don’t add it in final cut. Digital video will be at 0. Setup is an analogue NTSC thing. Playback machines should add it when played from a digital source but seeing as your submitting a 10 Bit file this doesn’t concern you.