Job Suggestions? FFIII

[Reels]

Hullo. :]

Well, just got the Jobs from the Fire Crystal (Ranger, Geomancer, Scholar, and Knight) and, I was wondering if I should switch some jobs up.

Currently I have a party of a Warrior, Black Mage, White Mage, and Red Mage. They're all around a job level of 30.

So, my question:

Would you suggest changing some jobs out? And if so, what for what?  

[Ravenwolf]

Well... I'll tell you that for a particular future battle, you're definitely going to need a scholar, so you might want to level one up in advance. I personally exchanged my thief for a scholar temporarily (just until that battle) and my warrior for a knight permanently.