Easiest Way to bring Twinks on Mayhem?

Hi, i brought my Twinks on Level 50 without doing Quests.
Now i wanna play Mayhem with them (solo).
Is it really necessary to play every single Char to the Story?
Or is there another Way?

Nope, no other way. I mean you could turn the game down to easy and rush the story. But that’s about it.

Thx, then i have to bring the other 3 Chars through the Story.