u need to put 20 points in Fire resist / Salvation for the bonus .. not holy fire ofcourse
i prefer CoA 10/10 ... the 3 fire skills won't help you since aura comes from item
so its basicly -15 fire res vs 1 skill / 30 fhr / 1x DR / 20-30 res / 10/-10
and u get lots of strenght anyway from 2x Dragon, so u don't have to over-invest in stat points to wear coa
u could get a flickering flame in storage for mirror matches or fire sorces ... but if u want to abs u could better just use hotspurs^^