Marauder: Blood Necromancer (HC)

Hello,
As I am a newbie to Path of Exile, I would like some hints from you for my build i wanted to Play.

For this build i would like to Play a marauder which evolves into a necromancer.

Pros:
Life instead of energy shield = therefor i can manage to compansate incoming damage with life flasks
Armor = Much lesser physical damage

Cons:
Lower "lifepull" as with energy shield, so magic will be more dangerous, but i should manage to compensate with life flasks
starting is much more difficult, in particular the Switch from my own damage to minion damage and totally trust in that

This will be my startbuild:
In this way I can Level my Minions the same time i Level. Therefore I spend 3 Points in defense/minions and 1 Point in intelligence and then repeating the whole time.



In the end the skilltree should look something like this:



The way of playing should be based on Zombies, Skeletons and spectra.
Maybe you got an idea to help me improve this build.
Thanks for your attentin

*push*