I liked that Dagger idea for Vaan. I'm at the Henne Mines and they've settled with this.

1st Row:
Ashe (Heavy Armor): Sword and Shield (Arcane for Flying)
Balthier (Light Armor): Spear and Gun for Flying (Telekenisis when I can I finally buy that)
Penelo (Mystic Armor): Bow and Black Magic

VaanVanguard:
Vaan: Daggers and Crossbow
Basch: 2H Swords/Katanas and Guns
Fran: Poles and Bows