Do not consider it!
The salary offered will sound very tempting. My opinions are as follow:
You will get into the situation where your professional judgement will be questioned at every turn.
The boss's temperament is explosive to say the least
You will be expected to be available for ANY duty hours, and even to fly again a few hours after getting back from an all-nighter.
Look carefully at the contract. You will have to sign a bond for recurrent training, so can never leave without forfeiting cash.
You might well have a horrible little man in the cockpit with you who is a pathological liar, who will do his best to drop you in the proverbial in order to ingratiate himself with the boss.
Are you getting the message - - - - DON'T DO IT.