Final Fantasy III - Met the Earth Crystal

I'm getting to the point in the game where going through it is starting to feel more like work and less like fun. It tends to happen to all older RPGs. Especially in ones that don't have interesting stories. You've pretty much explored everywhere there is to explore and so you know all the dungeons you will have to go through. It is just a matter of going through them all and the enemies there aren't exciting and aren't requiring anything significantly new in strategy.

This is one of the reasons that I skipped a little ahead of the proscribed path to get the earth crystal. I had just acquired the earth fang and I knew it would let me get beyond the statues, so instead of returning to Doga's mansion like I was supposed to, I decided to investigate to see what was beyond them. I encountered a dungeon and some enemies that seemed quite a bit beyond what I supposed supposed to be battling, but one room in I got to the crystal chamber. I now have access to all the jobs in the game (except Onion Knight).

I'm already contemplating what my final party will be. I'm thinking Dragoon, Knight, Devout, and Summoner. But I woud love to get a Ninja or Black Belt in there if I could.