There's a few medium str hybrid archers on babel around my own level. Even with their sos+7 i kill them easily.
Way too low hp.
There's also a pure int archer around my level (from prime if i recall) which i 1 shot in a crit
Unless you dont plan on doing pvp like mad and just playing sro for the fun of grinding, i would advise you to go pure str for the archer build =]