Build improvements

Hello all,

I'm currently rocking a reaver build.
After making several upgrades in the past 2 weeks i'm no longer seeing possibilities to improve my build (note that i'm a new player).
Currently i have 110K DPS tooltip (note my gems are still lvling up, i just purchase Q20 gems)and 4,5K HP.
I made sure all my gear pieces have an +flat HP mod. So do my jewels & my Belly...
Yet i see most people running aroun with AT LEAST 6KHP.
Furthermore people are talking about millions of DMG whereas i only have 110KEUR.

My build is currently "ok", but not superb.

I posted this here in order to gain some advice:
What are things I could improve on? How can i get 2K additional life?
My profile is public and visible to everyone.

I really want to get to shaper!

My current budget is about 300C.

Kind regards,

Stefan