I really, really like what you did with this system. I only really have two complaints.

The first is that starting MP seems really, really low. Even with maxed out intelligence, a white mage will only be able to cast a single cure before running out of MP at level 1. I suppose this is somewhat remedied by the fact that ethers are relatively cheap.

The second is that the strength stat is just about useless for a lot of jobs. It isn't tied to any skills, most jobs have a dex option for accuracy, and weapon damage for concealed and ranged weapons is based off of dexterity. Mages will probably even find that strength is not worth taking because the 50% spirit or int damage will be greater since they'll be putting more points in those attributes than strength.