Canon 5d mkiii Videosettings

[speckfechta]

Dear community,

I have got a few questions before i am installing ML on my 5d mk iii.
Most of the time i am using the Ronin M so i need to know if there is an C-AF or a center focus to keep my subject in focus (rap videos).
Is 12Bit RAW with no crop possible in FHD or higher and if its not whats the smallest crop-factor i can get?

Greetings,
speckfechta