need some help on pvp enchantress

alright, i just started making one and im gona need a bit of help,

so far, im using a perfect widowmaker, 5/5 firefaceted shako, faceted enchant ormus, lavagout/bramblemitts, sandstorm treks, noferastu's coil, highlords, ravenfrost and bk ring, cta lidless on switch.

i was wonderin if enchant will work with guided arrow, and if i should use coh instead of ormus. also about stats, should i put alot into dex and stuf or just do enuff dex/str for equipments and spam vitality.

for charms, should i load up on firegcs, or max/ar/life, fhr, res sc's?, or a mix.

Thanks