I tried to do the same on my build, but I don't think it is possible to reach that high of defense while maintaining perma-Hasten and the ability to run the top attack chain with Gloom. DPS was more important to me, so I settled for 20% defense.
Nearly 45% S/L/E/N is actually doable without losing too much but if I try to go Melee/Ranged/AoE is very harder. The point is that our main weakness is Psy, and S/L/E/N doesnt help a bit. Maybe I should try to reach 30% S/L/ranged. Right now I can score 30% all pos but I seriously gimp myself on the damage/utility table.
Your main defense against psi is +recharge. Healing Flames is a powerful part of your overall survivability.
I'm looking to reach 30% all pos on my SS/FA for PvE build. Anyone has a good build to share?