I think that i adressed that in my earlier post.

Early on especially, your limited by what you can make at the bazaar. Keep switchin around the classes when you lovely class runs out of abilities, since everyone has something useful (all humes and moogles should thieve in thier free time XP)

As far as party size, i have doubled mine in the past, 3-4 hours. It gets easier when you get to the Auctions in the story, depending on how quickly you play. It took me 11 hours to get there, but i do alot of frivolous things.

Also, there are missions that will add a clan mate whose race is determined on the month. Got a Bangaa and moogle from that quest alone. Its repeatable thank god ^^