Dragonslayer Spear, Lightning Dragon Charm, a third weapon with high dexterity scaling and low weight, I use Ricard's Rapier. Any shield with 90-100% physical damage reduction, I use the Archdrake Shield.
Throne Watcher Armor, Looking Glass Knight Gauntlets and Leggings. For headgear, anything light-weight will do, I use a White Priest Headpiece because it looks boss with the rest of the armour. Second/Third Dragon Ring, Sun Seal, Chloranthy Ring, Ring of Steel Protection. Personally, I like to swap the Ring of Steel Protection for the appropriate Quartz ring when spellcasters are abound.
Lightning Spear, Heavenly Thunder, and, of course, Sunlight Spear. A healing spell is always useful, and very feasible, but I don't use one.