well im actually a little experienced, i was an ice int bow..
for the weapon skills antidevil bow IS A MUST, the crits are beautiful
im not too sure about the arrow combos, the main point of arrow combo is to get more imbue hits in which comes in handy only as ice..
you should get the hawk summoning, buffs are always handy
autumn wind you can get if you want.. but its more sp to farm for..
berserker is definitely because it looks cool

and the splash damage is nice, the single damage is nice as well
strong bow, its a nuke, self explainitory.. and same goes with passive..
now for fire.. i dont have too much experience with it but i know enough what the skills do..
imbue, of course youre gonna need that..
flame body wisdom, and passive are good but thast all i know..
no point getting fire nuke because youre not int based.. and thast all i can help you with in fire..