Assassin/Ninja Help improving build As/105 (kinda broke atm, only 23 le)

Cant post links until 10 posts, but this is my build. I average 30-35k dps without vanish. Im tryna get at least a few thousand more damage and maybe some sustain or ehp, though it may be hard. Im a level 105 assassin btw.
WynnBuilder build:
> Shawl of Gaea
> Rekkr
> Physalis
> Virgo
> Darksteel Ring
> Flashfire Knuckle
> Flashfire Gauntlet
> Diamond Static Necklace
> Flameshot Hilt []

 

your build:
https://wynnbuilder.github.io/#4_0kq0a60X90rP0DU0BK0BI0OO0Gc1K1a001T-i1g00000
WynnBuilder build:
> Shawl of Gaea
> Rekkr
> Physalis
> Virgo
> Darksteel Ring
> Flashfire Knuckle
> Flashfire Gauntlet
> Diamond Static Necklace
> Flameshot Hilt []

some comments on above build:
-very low ehp for tstack(ideally you want to be pushing 80k)
-good damage but no courage
-no sustain

heres my recommendation:
https://wynnbuilder.github.io/#4_09S07N0kT0VN0W70Jf0K40OP0Gc0j13052B0y1g00000
WynnBuilder build:
> Centipede
> Calidade Mail
> Second Wind
> Nether's Scar
> Old Keeper's Ring
> Breezehands
> Prowess
> Diamond Solar Necklace
> Flameshot Hilt []

can also dual wield bygones so you get access to courage+fixes the above issues

 

you can also use pyroclast if bygones' -ls combined with second wind's -ls gets annoying

 

this is what i use
https://wynnbuilder.github.io/#4_09S07N0JL0VN0W70BK0BI0uH0Pt0y1G001M0j1g00001006C6
WynnBuilder build:
> Centipede
> Calidade Mail
> Greaves of the Veneer
> Nether's Scar
> Old Keeper's Ring
> Flashfire Knuckle
> Flashfire Gauntlet
> Recalcitrance
> Limbo [e6f6f6]