You need to get more resists. 800. It's was pretty impossible for me too, until I got a new piece with some all res, and it was all good from that point. It would be nice to have a weapon with Life on Hit too, but I think you can pull it off without one.
Yeah more resistance, more dmg and if you could get life on hit that would be great. But get more dmg, if you cant get more dmg for just 200-300k you cna gear your enchanters up to do 4-5k dps wich is insane considering your low dps.
You can try crafting it, i think its arround 300k for crafting the one with 300 loh. And you can get a good dps weapon with socekt for 500k. I dont know how much money you have to know the price range of the weapon you are looking for.
Unfortunately, the need to upgrade my resists got me into bankrupcy :
I'm currently on the 300k budget.
Will do some runs to increase that
OH, btw, boosted my resistances to 750/810 and I'm noticing quite a difference, altough some champion packs are impossible for me, i did reach the area just before kulle with 5 stacks! Then i got 3 impossible packs in that area and had to reset.
Killing kulle is not fun either, having to kite for 23 seconds waiting for ignore pain and letting the enchantress dps him