How could I improve my build/ How viable is it for ssf hc?

https://pobb.in/KyJAl0dWIXV1

Hi! I'm new to this subreddit, and I'm also autistic, so go easy on me.

The build is Spectral Throw(NOT Helix, yeah I know...) Scion using Trinity and Nightblade for dmg. I use hybrid es evasion for ghost shroud and sniper's mark for single target boost, basically guaranteeing a third hit(3x total dps in full dps 1.6 mil, not a lot). As I'm spectral throw I can't get fortify in any way. However with the good gear(ASPIRATIONAL, mostly) I have on my items tab, I could get suppress cap.

Q: Why ST/Scion/Dagger?

A : Because I like it. It looks cool in my head and st is my favorite skill for nostalgic reasons.

A: Scion is the one who gets st as a skill so I suppose she fits it thematically more than the other classes.

A: daggers are cool bruh!

I know I have flasks active the idea is to get charge on crit.

I know I lack 5 int, I'll get a hybrid amulet.

I know I'm degenning I get 2% extra regen from heart of the oak if I used a flask recently plus slayer overleech.

What I currently need is dmg and to know if I have good enough defense/sustain for mapping in ssf hc.

I'll get res capped on gear.

I have 5k hours in poe and I have gotten to red maps in hc on my 4th hc ssf league. I love st and I don't care that I'm playing a weak skill all that matters to me, is that I'm having fun. And I have been with my own builds on weaker skills so far. Even though I have never reached true end game. It's enough for me.

PS: Sorry for my bad English, I'm not a native.