I'm using a similar build with great success (former double tornado here).
Cleave with fury rune. Much faster fury generator than bash imo because of ability to hit multiple enemies at once.
Rend with increased radius rune. (Increases range by a lot, don't need blood lust rune)
Hammer of the ancients (for massive damage against elites, crit over 800k without using wotb)
Battle rage with marauders rage
War cry (duh)
Wotb with insanity. This slot is not set in stone for me but the damage is impressive. Since I switched to passive life steal skill I didn't need to use ignore pain.
My biggest challenge was staying alive because our attacks are so slow. So I upped my AR and switched to passive life steal skill instead of ruthless. The damage decrease is relatively minor but my survivability shot through the roof. Not saying I don't die but I fare much better now. If I had life steal skorn I could probably go back to ruthless. No big deal
I find the healing from rend keeps me alive quite a bit..more than my life steel is able to support. Until that changes, I will have to keep blood lust I think.
Yea, rend is how I get a lot of my healing as well with the radius rune. I can hit more enemies and with my 3% ls belt and 3% passive it seems to do the trick for me.
I don't know if the bleeding ticks heal me (passive says Gain 3% of all damage done as life) but I seem to get more health this way then with the bloodlust rune.
Either way, it's been fun to experiment and a nice change from ww'ing everywhere.
83k dps unbuffed (around 115k with Battle Rage and over 250k with WoTB =D), 660 AR unbuffed, 6.4k Armor unbuffed with 37k life.
I'll start by using cleave to get some fury then use rend. If there are elites I will get max fury, pop a rend then spam Hammer til I'm out of fury then cleave again etc. Also have to keep Battle Rage going and pop WoTB if elite is annoying. Something like that. Just have enough fury to use rend and/or Hammer.
This is in a full party btw. White enemies usually die after 1 rend and 1 cleave when going solo. With dps this high most builds will probably work =p.