Yes, you screwed up your character.
Int. bows are not very strong, because as a bow user you already got distance on your attacks and don't need to use nukes to kill your enemy. In other words, archers or bow users should go pure str, the hp bonus gives them much more bonuses in battle.
Bicheon mastery is for sword/blade, heuksal is for spear/glaive. If you are a bow user already don't lvl them, because you don't need them an you are just spending sp on it.
And the forces, ice is good for archers, because you can frostbite/freeze your enemy which will make him very slow so you can do much more attacks with a bow before he is able to hit you at all. Lightning is good because it reduses parry ratio and so the max. dmg that you can make to your enemy is increased. Fire makes the most dmg. Force is just good because you can have skills like Rebirth art and Therapy, medical hand is also not bad, but since you got pots already it's not so much recommended.
What i just said is what i learned on this forum and ingame about archers, and my opinion about certain skills or weapons. I'm not a bow user, so i don't know how is it to be a bow user, but i hope that i helped you.
This is Hellsharpt str/bow guide:
http://www.silkroadforums.com/viewtopic.php?t=7969
And a General archer guide by Tour Guide:
http://www.silkroadforums.com/viewtopic.php?t=5044