Weapon Types

[Forsaken Lover]

I go with what weapon makes the most sense for the character.

Vaan's whole build and character screams Daggers. Maybe a sword.
(guess I was right as he is my fastest character and fastest characters should have daggers according to what sora_lion_heart posted)

Ashe is a Swordwomen be they regular or katana.
(she has a katana right now and, wouldn't you know it, she has the strongest Magical Power of my main party. I'm good)

Penelo can have anything really. I think she looks best with a bow, though.

Though I haven't bothered with guns at all in this playthrough, you guys think i should buy one for her?

In regards to armors, it seems pretty straightforward to me. You pick the one with the Highest Defense and the one with the highest Magic Resist.
Why get anything less?