Your gear is just fine. Socket 4-6 Perfect Bloodstones just in case. I use different strategy for realm because with Celerity proc from
Ring of Disengagement
Ring of Disengagement
Ring
Required Level: 1
Item Level: 1
1% Chance to cast level 8 Celerity on Kill
+(6 to 10) to Strength
+(6 to 10) to Dexterity
+5 Maximum Stamina
you can easily be trapped in desync and so is with Angel of Death: enter Vizjun, start proceeding forward to MCS. I usually start killing robots on the corridor when the boss is. If you attack monsters before that moment, they will probably die, but the level will be flooded with mines, sentries and you can also die from a random nuke. Thus, just go forward without attacking. Use Jitan's Gate (not Angel of Death!) to prevent desync on realm. One purify is enough to kill the boss.