and with what you have problems? i have similar geared barb and i pwn mp6-7 solo, so in duo shouldnt be a problem, cm wiz is nice cc'er
i would prolly add like 100-150more AR somewhere
dunno how much you want your HF ring on, but you could find replacement with cc/cd/str
i'd also add str on neck
main hand seems to be 1st to change tho, low dps on it, find with same stats (mby more str?) and bigger dps like around 950+
you can also drop loh from oh, find something with bigger dps, more str, cd socket and life steal
loh is pretty much useless after 50-70k dps and it adds much to the price of items
edit just now i noticed you said 5-10mil.... well for more dps in that gold range i'd still try to get main hand or ring.
As suggested I would defenatly go for another Main Hand, I would try and go for a 1000 dps axe with a socket, ye you would loose some Crit dmg, but keep in mind that the damage from your tornadoes is only calculated from your Main hand
Regarding your HP, for farming Uber bosses i think its fine, and i would try and find another helmet with a socket, maybe something without extra damage taken from fire damage
Imo you dont need more Life Steal, im running with 6% and im completely fine on mp8 and i only have 300 LoH
If you want to you are very welcome to stop by my barb, my battletag is Karaz#2866, but keep in mind that im from the European servers
Edit: An easy and cheap of getting more protection on your gear, try and get some Lacuni's with armor
Like some others said change your offhand you won't need life on hit
Now..I can survive with just the 3% life steal from
Passive up to mp5 then I just add immortal kings belt for mp5-10 and its not a problem.
I found getting more str helped me alot . I have over 3k str with iK belt equipped and the difference it made was great.
You may also want to consider some iK parts now you can pick them
Up cheap for the resistances