Full Support is outdated and highly not recommended since most players solo now. It's better to go hybrid instead if you want to still support. There are different variations of hybrid, you can have Magnus Exorcismus and Adoramus Lvl 10 but not Sacrament.
Support Gears:
+9 Clergy Nurse Cap []
Gorgon Coronet / Ancient Elven Ear
Rosary's Necklace
+9 Antonio's Coat [Antonio] / armor with element depending on situation, such as Bathory Card
+13-15 Croce Staff [Lunatic]
+9 Scutum [Frozen Gargoyle]
+7 Avoidance Cape / +10 Old Morroc Shawl [Choco] / +9 Valkyrian Manteau [Choco]
+7 Pilgrim Shoes
Light of Cure (Cure 1)
Arch Bishop Ring [Yoyo]
Costume Goggles/Tiara/Crown/Boy's Cap / any costume with Archbishop Lv1 enchant
The above should give you 100 perfect dodge while being able to spam High Heal for ~20K.
For DPS gears, there are so many variations, so here is 1 more example:
+10 Sacred Crown
Sunglasses [0]/[1] / Glasses [0]/[1]
Mob Scarf
+11 Automatic Armor Type B (MATK x2)
+12 Awakened Saint's Hall [True Margaretha Sorin]
+12 Excelion Shield / +12 Mad Bunny Special
+12 Temporal Int Manteau / +12 Fairy of Eden [Yellow Pitaya]
+9 Moaning of Evil Spirits [Nightmare Verit / Boiling Marc]
Valkyrie Drop [Headless Mule] x2
High Priest (Middle) stone costume enchant
Arch Bishop (Garment) stone costume enchant / +9 Grace Magic Boots bug
Arch Bishop class shadow set (6 pieces)