Use Titans Snare as your shoulders and the one on your MH to increase Strafe duration in place of the Stafe rockets. It will make your Strafe last almost infinite while hitting a boss or mobs and increase your overall damage. 3.5k reso and I get almost 300mil in a minute.
Playing the 4 piece Gold set is a trap, a lot of people fall for, in BG and PvE. Yes high Dmg numbers are appealing, but you almost never get the full result because of invulnerability phases that cancel out the dmg. Trash mobs die even faster. If you want to boost your dmg further i would recomend 2 piece gold + 2 piece flagellant because both boost the immediate Dmg you deal with Strafe.