The point is много на себя берёшь/берёте can have two different meanings -
(1) Вы слишком много на себя взваливаете. - You're biting off more than you can chew. (2) as in Вы что себе позволяете? - What are you doing? (about someone behaving in an acceptable way).

Александр, Ваш перевод о другом.
https://dictionary.cambridge.org/ru/%D1%81%D0%BB%D0%BE%D0%B2%D0%B0%D1%80%D1%8C/%D0%B0%D0%BD%D0%B3%D0%BB%D0%B8%D0%B9%D1%81%D0%BA%D0%B8%D0%B9/bite-off-more-than-you-can-chew

thank you Tanya. .l got it now

NP. We wouldn't mind having your option of this. )

I would say : Young man, you are crossing the line / young man, are you out of your bloody mind

Thank you. I'll keep this in mind. ;)