+DEX makes less sense than +STR, but! don't use dyes +4-5, better buy +4-4. -8 STR it's a lot already to put you in permanent stun :) And ofc it's only for PvE.
If you do alot of PvE but not really PvP then go + str. BD's aren't usually expected to tank anything.
If you do alot of PvP still go + str but don't overdo it. I only have 1 tat myself.