it really depens on what you like
glaive is easy to play and pretty strong, decent dmg and nice skills: imo fire 90, light 90, heuksal 90, cold 30 is the only way to go. And then just spam like 4 skills.
now bow is a bit more challenging, they have nice crits, great range and they are great against euro's. Personaly I'd take pacheon 90, fire 90, cold 90 for a standard bow.
Since you got range (so you don't need phantom much) and you've got a lack of defensive skills (only 2 skills that KB / stunn). And speed you can buy.
Or if you don't want to buy speed drugs all the time you can do like a 90 pacheon, 90 fire, 60 light, 60 cold. your def will be a bit lower but you won't have to buy speed drugs for grinding.
Or if you want to go with a not so standard bow you can take 90 pacheon, 90 fire, 90 force and 30 cold (like i'm doing, cause i'm used to the many skills that nukers have so I'd get bored with a standard bow-build

)