A:Answer Re: language - Apple indicates you could.
https://support.apple.com/guide/mac-help/write-in-another-language-on-mac-mchlp1406/mac#:~:text=Set%20up%20your%20Mac%20to%20write%20in%20another%20language,-On%20your%20Mac&text=Go%20to%20Text%20Input%20on,Click%20Add.
Re: charger - the 70W is an option you can choose at Apple.com or at Apple store for no extra charge.