It's easy enough to level, it just takes longer than other FF games (exception being FFXI). I easily got from level 14 to level 19/20 around the Sandsea, just killing the red mandragora's -- stealing their succulent fruit that sells for around 400g a piece. So I easily made around 40,000g-50,000g in that level up spree.

Now I'm just going to finish off the hunts I currently have because I have (SPOILER)Vosseler in my party to help!