Clothing is always best for every stat gain you would wish to specialize in, with the exception of defense (unless there's some hax defense accessory enchants I'm not aware of).
You can make Victorious Glass Fragment Premium newbie wear for free or very cheap, then pair it with Light Gemini accessories (Light is common from Rundal HM and Gemini are inexpensive) and you already have 31 max damage and +3 critical from just Clothes and Accessories for
A LOT less than any decent Darkness armor.
When you have enough money to upgrade, consider replacing Victorious for Extraordinary (300k), Gemini for Lilly (800k~1.5m ea) and Glass Fragment for White Horse (cost is your sanity depending on how much you are willing to run ciar, lol) for an extra +7 max damage and +6% critical.
A nice thing about Extraordinary is that you can use it to bridge Restored later on (+17% crit, +5 max, +5 min) and once you have that you will never worry about crit again 8D
Quote from Shirayuki;334661:
Well, Extraordinary White Horse + 2x Oblivion Lily Accs vs Ancient Darkness + 1x Oblivion Lily Acc.
Former:
14 Max 20 Luck
20 Max -20 Luck 30 dex
Overall 46 Max
Latter:
27 Max 20 Luck
10 Max -10 Luck +15 dex
Overall 43 Max 2 Crit
Correct me if I'm wrong? D:
PS: I'm bad with enchants.
You can replace Oblivion with Precise (almost the same in terms of average damage since raw Dexterity gives Min) and keep the crit with clothes setup.
Don't forget that Oblivion can also go on clothing so if you're going for pure max damage then Extraordinary shouldn't even be mentioned... and you can just go for a crit+dmg build, replacing Extraordinary or Oblivion for Restored (+18% critical and -2 max damage over Extraordinary and +20% critical and -5 max damage over Oblivion).
In my opinion, light armor isn't worth it at all as an Elf singe g12 and was just made more redundant with the release of g13. Light armor build is still great on Hybrid human, though.