Woah Woah, don't listen to those people say that is too low of pole WPF for an archer hybrid. Archer hybrids need to get the most WPF they can, and you DON'T need more than 50 wpf in melee to use it
perfectly fine. The only thing you'll suffer with 50 wpf compared to 100 wpf is a very slight (~3%) damage nerf from the weapon as stats listed, but each power strike buffs your damage by 8% anyways so that's negligible. It'll also be 1 or 2 weapon speed slower. THat's it! Nothing in the scheme of things, and certainly not something I'd sacrifice archery accuracy for.
As for the build, Are you intending to stay at/above 31? Not retiring? Then sure you can aim for a level 31 build.
if you AREN'T and plan on retiring to heirloom, I would do THIS build as an archer hybrid:
Level 30 (4 420 577 xp)
Strength: 18
Agility: 18
Hit points: 63
Skills to attributes: 2
Ironflesh: 5
Power Strike: 6
Shield: 0
Athletics: 6
Riding: 0
Horse Archery: 0
Power Draw: 6
Power Throw: 0
Weapon Master: 6
One Handed: 1
Two Handed: 1
Polearm: 50
Archery: 152
Crossbow: 1
Throwing: 1
You Don't need more than 6 PD, so 18 strength is fine, i'f you're goign to level up higher as archer I'd stack more agility and weapon master than this, 18/21 for level 31 iMO.
I will end on this note: Archery Heirlooms are really really good. Not having an heirloomed bow is a big deal. get one if you don't have one. A hybrid like this would be Amazing if you already have a +3 bow (and +3 arrows are nice)
Oh, aim high and try not to lead shots too much and you'll do way better as archer, any ranged for that matter.