Replying, because nobody gave a solid answer.
My Barb has got 180 dex (51 crit chance) 9700k accuracy with acc. buff. I also have 1 accuracy shard in my weapon.
In my opnion, a barb needs about 8-10k accuracy, if u manage to get EU titles, u will have even more accuracy.I always make all-rounded chars (good for any aspect of the game), like to be able to purge with pike, purging with r8 weapon is a a bit pain.
On this server, you are constantly getting ganked, so barb isn't the best class to play.