I Infuriate>tomahawk (unchained)>HS(berserk)>skull sunder (internal release)>butcher's block.

Anything else that follows it would be situational. In Titan EX I'd probably pop SP afterward follows immediately by IB to mitigate the first mountain buster. I think I fit in two more gcd before pacification kicks in. So that's going to be Fracture (I know I know) and Heavy Swing or something.

I'm still learning but I don't feel comfortable not opening with BB combo.