Oh and don't bother leveling your weapons. Its pointless.
You will only need it when you reach the boss battle of chapter 9.This of course if you grind every monster without repeating battles.

Donīt forget to look for Vanilleīs robot in Oerba to enter a sidequest.This will give you valuable pieces which sell for much money(I donīt think this is much of a spoiler).