As an aps archer, it is incredibly hard, since sins usually have higher p def, can get up close so your damage i shalved, and ofc sins have the debuff that slows down APS.
However this new breed of 'channel ' archers, have it much easier, With increased range, and very fast cast attacks, especially the magic ones (coz they r most useful on sin ^^)
I would suggest you go on the channel route, it is a LOT easier to play, a LOT easier to kill on, They are good at killing all classes, whereas aps are mainly for arcanes/LAs and suck on HA's. However it CAN be quit costly, however you can get -75% Channeling and 75% crit, seemingly easy ^^