lulz.
my setup as follows:
m1 deadly reach, +18% dmg rune
m2 conviction mantra, +24% / 48% 3 seconds damage rune
1 healing burst, +15% dmg rune
2 serenity, healing rune
3 mystic ally, earth ally, +10% health, aggro mobs, she tanks for me
4 inner santuary, 1.5k health per second rune for 5 seconds
p1 gain health for spirit spent
p2 gain armor for dex, my dex is like 1.4k so that is +1.4k to my armor from my dex i guess.
p3 one with all. i buy items with all resist and all poison
my eirena she now haz 2.8k dps i think. her int 1.6k i think.
passive1 switch to resolve - 25% damage reduction from enemies dealt damage for 2.5 secs (you will notice a hugh difference in terms of survival)
also in act II , you probably only need about 600-700 LOH to have it comfortable face tanking from what I can see with your stats