Your gear is better then mine and on trash i pull 11k + and on a boss like fester i pull about 8.5-9k and i never have any problems with my rage, always seem to be full of it
Looking at your profile briefly i note that your crit appears to be a little low.
With ArP soft cap is when you get 100% armour pen with a trinket proc. normally around 51/52% without a proc which is what you should be aiming for.
Re the rotation its so simple its not even funny. Wouldnt use Heroic Throw as it resets your swing timer, dont think i ever use it unless i am out of melee range. Make sure you are exp capped mh and oh. hit you want around 200 with 3/3 precision.
Only had chance to have a brief look at your profile as i am at work at he moment but should get you started