Imo focus is better for AW. I've played AW for a long time and buffed with a focus SA u crit more then 2/3 of ur hits. Crit dmg is best for TH cause of their crit passives, wich u dont have :/
As for tats, dont use them till u r 62+. After that go -8 Str +4 Dex + 4 Con, since u'll be using nothing but blows wich power isnt affected by str.