Ice Shot Help Please

So, I am wondering what gems I should combine ice shot with in a 5L item. Much help would be needed. I currently have the following:

Ice Shot + Added Cold + Cold Penetration + Weapon Elemental Damage + Lesser Multiple Projectiles

I'm wondering if concentrated effect will help to increase my DPS, and which gem should I switch out for it.

Do you have the mana budget for all that?

switch out added cold damage.

dont quote me on this, but i recall conc effect increases damage of the conal AoE, but NOT the initial target hit. it also decreases the area of chilled ground.

offtopic: if you're intending the mob with it, you might want to try out pierce.

Faster attacks

Thanks, looks like I will switch for Pierce or Faster Attacks :)

And I have the blood mana to sustain it :)