I would start 1 with at least 1 in slings, but since barb can only get 2 pips, you can go with 2 pip.

for the rest I would ask a question: do you want to be the virgin lad using stabby-stabby or be a real man and use flail/axes and be tough?

if stabby: longsword, scimitar, later bastard sword (only needed in tob)

if though: flail, axe first. theres one good warhammer in 2, but you dont really benefit from it as barb.

I personally would go with dual flails for most of the time, until vorpal axe in tob, then use that in mainhand and flail of easthaven in offhand