Got ~6500$ and 39 quorite (looted 13 times) using a 0/1 stars lvl 29 Master Thief team, on my first day...

I went into Kisso lake - last stage. I guess this one would be good for beginners, and it is better anyway when you oneshot monsters.

I looted iron ore on the little ball-ennemies from the very beginning. They seems to only drop it at death, not by steal.

A good place for farming these is Aldia Shrine - 3 (event)