if u wanna mass pk only and be an usefull member to ur guild i suggest u going demon with good aps and a blackhole bow, purge and good dmg
meanwhile if u wanna 1v1 aswell id go sage full dex for mass pk since it hiero bugs most targets and make a channeling set for 1v1 since it gives best dmg
r8 bow atk lvls for sage
nirvana 145 bow 3x int blackhole for aps demon
demon can 1v1 aswell but on a sage EA is way easier.