I dont know if it's really possible to get the ultimate archer spamer build.
If you go for a lot of agi, you wont do any damage and you'll have to aim perfectly to have some fun. (Remember that PD helps with the reticule a bit)
If you dont have at least 5PD and 150WM in archery, it is going to be hard for you to hit even at medium range.
10 or even 12 ath is verry nice is you like to get close to the action and it's probably the funniest skill of them all but since you'll need to be close to do any dmg, go for throwing.