id prefer this skill setup:
cold skills: nothin
fire skills: 1 into warmth
light skills: 20 teleke, 1 tele, 5 es, 20 chain light, 20 lightening, 20 light mastery, rest into cb ( 14 @ lvl 90 )
precast gear: 3light circle, 3light amu, es ormus, 9es/4-6sa memo - and not to forget

+1 from battle command
( ill post complete gear + stats n dmg in here when im done with my light sorceress ! )