Help me scale damage on my ES VK

So I have a cookie cutter ES VK (build) and I’m looking for my double T7 2LP upgrades, and I am finding some conflicting info. I really do not feel squishy at all, as I rarely die to uberoth, so I was looking primarily for more damage where available. Considering the usual mana slams on helmet, chest (with +4 ES), gloves, relic, what are the best damage affixes to get on my gear?

World splitter (2nd affix) - void pen, shred armor or crit multi?

Relic (2nd affix) - str, crit multi or void damage?

Gloves (2nd affix) - attack speed, str or shred armour?

Helmet (2nd affix) - probably more mana

Rings (3rd affix) - void damage

Belt - as much HP I can get

Amulet (2nd affix) - crit multi, void damage, void pen or shred armor?

Boots (2nd affix) - str?

The different ranges of affixes on each type of equipment really gets me confused. Is there some simple math I can do to quickly identify the best affix?

Also for my class idols, should I be looking for increased damage (up to 18%) or increased crit multi (up to 13%)?

Thanks in advance!