Which enchantments should I use for a maximum DPS archer build following the Ordinator overhaul?

Solution 1:

Based on the data available here, your choices are correct:

Chaos damage applies the base 10 pt. damage to all three elemental effects (triple damage) but with 50% chance, making the average DPS about 1.5 times the damage of using a single elemental effect.

Fiery Soul Trap gives you the standard 10pt. damage that you get from the Fire Damage effect with the added benefit of soul trapping. However the fire effect is NOT augmented by your enchantment skill or perks. It is increased by the Augmented Flames Destruction perk, however.

And Frost damage is beneficial as it slows down the enemy which is useful against the majority of enemies (excluding trolls, frost atronachs and frost wizards), as well as the 10 pt. base damage.

If you are playing a vampire, you can further increase these effects using the Necromage perk (+25% magnitude on enchantments) and by levelling up your enchantment skill and choosing appropriate perks.