The second rotation (BC+Rampage->RB->BT->OF->RB->BT) is probably correct, though there are two questions I haven't seen answered:
- If you Enrage before starting the RA/BC window, is it better to swap OF and Rampage?
- At 30%+ Haste it's possible to fit 7 GCDs in the RA/BC window if you cut Rampage. Is it worth it?
Question 1 is a matter of whether 1-2 ticks of OF missing the window are worth more than the 30+ Rage you overcap by delaying Rampage. At low Haste, or with multiple targets, it's probably better to hit OF first if you're pre-Enraged, but at 25%+ Haste it likely doesn't matter since only 1 tick will fall outside the BC window.
Question 2 is awkward because one of the 7 GCDs will end up being FS. You can fit in 3 RBs if you're pre-Enraged, but is that worth losing out on 60+ Rage? Seems like a wash unless you have a proc to use in place of FS, but if you do that's probably better.