16% Max Life or 80% Reduced Critical Damage Bonus From Hits Against You?

I have 8 open rune sockets on my armor items.

All of my resists are maxed, including chaos.

Fire resistance is at 90%. Lightning and cold at 77%.

I have 3,322 life, 126 energy shield, 618 armor, and 279 evasion.

With these 8 open rune sockets, any opinions on whether 16% increased max life or hits against you have 80% reduced critical damage bonus would be better?

Life would also increase my life regen a bit. I'm currently at 290 life regen.

I'm thinking the life bonuses are constant whereas the critical protection only helps when I get hit and it's a crit. However, those may be the hits most likely to kill me, so if taking down the damage bonus from say 130% on Xesht to only 50% could be really beneficial as well.

I'm converting 45% of physical damage taken as fire damage with a corrupted Cloak of Flame.

Any help would be appreciated since I just spent 80% of my currency on purchasing all new gear and this is the last step, which cannot be undone.