advice on making trinity doomfletch prism work

Currently building up a doomfletch build, i don't know if im building the build correctly. Single target feels lacking

accnt:
https://www.pathofexile.com/account/view-profile/deathcon/characters

Character: frickk

For my single target, i have elemental hit linked with barrage/trinity/added cold/slowerproj

I'd rather have ele damage gem instead of added cold but im out of chroms atm.

sorry for poor format, this is my first time making a post on here and im not sure how to make it look nice.

with my current set up, it feels like my aoe clear with split arrow is doing about the same dmg as my single target setup. pretty sure i just screwed something up with how im suppose to be setting this character up. any advice appreciated