If you don't care about melee combat, 10 PD/6WM is pinpoint with +3 Longbow with light-mediumish armor since there's still some net gain in accuracy from PD after the WPF loss, though you're limited to 4 skillpoints after that at 35 (I'd probably put them in Athletics)
I wouldn't suggest investing in more AGI, high PD is the way to go now since getting to the smallest reticule size possible for each bow is easy with =<18 AGI, as long as you don't go overboard with melee WPF or armor.
At 35 you'll have a choice of maxing out ps/pd + athletics/wm at 21/21 or 24/18 if meleeing is important to you.