Personally, I am playing a hybrid 2:1 INT bow that would bring you close to the 70:70 build. Cold or Fire as main imbue - either you slow the mob and kill it, or kill it fast with fire. Light is a must for parry and speed buffs.
Its a charm to level as PvE is never an issue.
I am not sure if you had gone the pure route before, as it is the basic of getting hold of the game. This char I have is for fun and if it is your 1st char, be prepared to find that there are weaknesses in PvP:
STR Blades may walk over you, Glavie and STR hybrids maybe, but pure INT would be a walk over for you.
I would recommend Protector; Garments if you do not wish to PvP and hit 1 on 1 mob. With full SOX protector, I can tank like 4mobs 2-4 lvl up.
Its a pain to play bowman in SRO if you do not stall or trade, bow is a massive investment. I only go SOX bow as anything less you may not find the fun in the char due to slow killing.
I am not sure how my char will end up, max bow skill is a must, light would be around 60, and rest to fire and ice (not decided on mastery, depending on new skills in ice). Nuke it seems, is an option.