2024 Barb help

1st Barbarian with 2024. So I want to check some stuff on her. We are rolling stats, so I used standard array to place hold. 

https://www.dndbeyond.com/characters/160029674/iIFRem

Farmer fits for story (And I am so glad we finally have a farmer background.) gives 2 ok skills, and toughness. 

Human bonus feat: Savage seems a no brainer, Berserkers get one big hit on top of devastating later on, might as well roll it 2x. 

Mostly looking for a double check

Cleave is the one I have questions on. Keep it simple, I roll to hit, I hit I deal... 1d12+str+2+2d6 damage. I cleave... how much damage does the second target hit? Do I roll a D12 alone, do I add rage, do I just do the original damage - strength?