The problem you'll see with a frenzy barb in Ubers is that there's two sets of uber monsters each - i.e. two diablos, two mephistos, two baals. When I went in there as a frenzy barb, I found the only way I could KILL them was if I could isolate each uber. I used the section where Griswold would normally be. You would need to get a good lock on Mephisto as well because he likes to run away and then you'll get caught facing skeletons which you cannot lifesteal from. It's not that the IK barb isn't good enough, it's just despite all of your effort, his kit isn't equipped to deal with it. I used to Fury druid on Vanilla D2 with dracs and some other high end build stuff however druids on Anni fall a bit short and I doubt he'd have enough to get away with two sets of ubers.

Your best bet is to make a good friend who can help you torch farm. There's also services to torch farm for you and they keep the standard of heroes + the additional organset depending on what you're willing to give up. :/

EDIT: Get that zealer a smiters outfit.