Some questions about 2h GS Mara

I'm lvl 85 2h GS Mara. This is my tree:

This is actual gear that i'm using now:

So, yesterday i finally bought a 6L Marohi and started to use conc effect gem.
With my current gear and Hatered my dps on GS is ~28k. My hp is ~4.7k

Question #1: how do i deal with mana issue? I have enough mana to cast GS 2 times and i can cast it a couple times in a row if i hit because of mana leech from belt, but eventually my mana goes out. Should i not be using conc effect and how can i replace then? Should take some mana nodes?

Question #2: is Stun mastery cluster actually worth to spend points on? Since i take Unwavering the node itself is 1/3 useless for me.

Question #3: what nodes should i take next on the tree? I really want to take Berserking cluster couse it adds quite a bit of dps and move toward scion health wheel, but i guess increasement of atck speed will also increase mana drain, right?

Question #4: what dps can i consider enough for end game maps and Atziri? Will i be able to beat Atziri at all with this build?

I would also appreciate general recommendations on my tree and gear.

This is my first character and i started to play POE just a month ago so i still consider myself new to the game.

Thanks for help and sorry for my English.

1= Bloodmagic gem
2= not worth it
3= go into the templars starting area
4= nope, no atziri for you, play ranged with daggers thats how you deal with atziri

i would recommend more life, 4.7k for endgame maps and Atziri is a bit low
-> so yes Scion Life Weel + Berserking on the way :)


I think you can do Atziri, but for shure not Uber Atziri :)


If you want to run Auras you have to get Blood Magic gem or Skip a Aura ...