Crafted my first 6l bow. Need advice

So i just crafted my first 6l Ele bow. And here she is.



I'm wondering what I should put in that 6th slot.

I'm running 2 5l's one for ele hit and one for split arrow.

Ele hit - faster attacks - Life leech - Weapon ele Dmg - culling strike
Split - faster attacks - life leech - weapon ele dmg - chain

I'm thinking either a quality culling strike on split or perhaps another added element gem. LMK what you think would be best.

added chaos or added lightning for me.

or put in blood magic and spec out of it.