The armor kind is entirely up to you.
Depends what you want...
Take armor if you want better defence for pve as most mobs are physical.
Protector if you want a share of defence, speed and less mp consumption
Garment (my choice) for a larger increase in speed + even less mp consumption.
I would choose garment, because as a bow character you're going to be hitting from a distance therefore not taking as much damage anyway.
However for pvp it's a differnt story. But a large number of people on my server choose Garment for this also (pure strength, not entirely sure for 80:80/ 70:70)
Hope i've been of some help
