First I want to say with all the gear and epic gear out there... The combination of gear is rather endless. I often find I am reconfiguring my gear as I gain other things. Unless you have a very generous guild it will take most that even attempt epic items a long time.
Goggles = Tharnes
Trinket = Bloodstone
Gloves = Gloves of Titan's Grip
Necklace = Scourge Choker -really great tanking or Monk Necklace or Bluefire Necklace
Boots = Firestorm greaves, Boots of Anchoring, Gyroscopic Boots
Cloak = GS HP cloak or Cloak of the Zephyr Cloak of Ice
Rings = Depending on your build, ToD rings a must, one holy and one shocking.
Belt = Belt of Thoughtful Remeberence, Electric Haze, Knost's Belt (IF WF Purging the
Pantheon is an Excellent choice.)
Armor = DT Armor and if WF I recommend the Quorforged Docent of Battle, the crafted version, not difficult to obtain.
Helm = Minos Legens or slot a GS item here.
Nifty Clicky items to get.
Planar Girds and/or Draconic Necklace (Greater Heroism)
Visor of the Flesh Renderer Guards (1/rest 7 Min Death Ward)
Mechanic Belt = 3/rest CL 15 Jump spell
Nyoko's Necklace = 3/rest CL 15 Invisibility Spell
DT Armor config ( I actually have 3 sets of DT with differing configs.)
Eldritch = 10% Healing Amp, Death Block or Heavy Fort, but if WF Greater Fire Resist
Tempest = Healing Amp 20% or Corrosive Salt or Crushing Wave Guard
Sovereign = Radiance or Disentegration Guard
I dont include resistance items in builds because I try to get two end reward abbott items that give you 15 minute nightshields, raises resistance and makes u immune to force spells.
AC I only moderately concern myself with, its not amzing and its not low but its good enough for most trash mobs and to work for epic ac defeats your DPS. So I build for moderate and incidental AC.