Dont got with to much Agility and Weapon Master :)
I am playing a 21/21 build with my Polearmer and i got 133 wpf.
I got an armor with 14 weight and a pretty good helmet and gauntlets. If you want to be more cheap then you should try some armor with around 11 or 12.
Your leg armor is not that important as inf, so Rus Cav Boots are quite a good choice. For more Body Armor take some more expensive Gauntlets like the Scale or Wisby Gauntlets. They arent to expensive and they do some impact on how much arrows you can eat :D
As you are NW player, you are used to the 2 directional polearm. Heres a list of 2d-polearms:
Trident, Pitchfork, Bamboo Spear, Military Fork, all 3 lances, Long Voulge, Battle Fork, Ranseur, Swiss Halbers, Spetum, Awlpike, Corseque, Long Awlpike, Ashwood Pike, Partisan, English Bill
In my opinion you should try one of these: Battle Fork, Ranseur, Swiss Halberd, Spetum, Corseque, Partisan, English Bill
Those are strong weapons with hurtful pokes and overheads.
:)