Which will be the best dps?

Hi guys, I am playing a magicka sorcerer with 1 pet. I am using the skill setup of theasiangod youtuber.

I have: 2x Zaan. 5x Necropotence (body). 5x Mother Sorrow (frontbar). 1x Maelstrom inferno staff.

If I switch the Necropotence with Spell strategist my dps will be higher? I don't have the math to do it and as magsorc i only have single target dps abilities except for mystic orb and unstable all, so i don't care much of aoe dps because all bosses in dungeons are just single targets.

Thanks.