lazyninja --
* For everyone else! Spoilers below!!!! *
Sorry for the delay in this post; I've been at a trade show the past 4 days.
Anyway, you should at this point in time at least have Dragon Mail for your main party. One member should be equipped with a Katana, another with a ranged weapon (at least a Yoichi Bow) and another with a melee weapon. I don't bother with shields, they are a waste. Spend the money on helmets with high Magic Resist values instead.
Spells you should absolutely have at this point:
Dispel/Dispelga (Balfonheim Port/Gallerina Marketplace)
Gravity
Esuna
Curaga
Protect
Shell
Reflect
Raise
Slow
Bubble (Rabanastre Muthru Bazaar & Inside Airship)
Your gambits should be set up for all boss fights so that you have one party member bashing away with the other two in a support role. Open EVERY boss fight with at least 2 party members casting Dispel, Haste, Slow, and Bubble. You MUST have 3 Mist Charges for every party member. Buy every available gambit slot for your main party, even the 100+ LP ones. You will need them!