So I'm playing through my second FFIII file for the DS and decided I wanted to go for level 99 and get max Hp. I'm aware of the Black Belt being the only job capable of doing this but I had a few questions I wanted to address before I really get into it.

Do I need to worry about my job level? Can I go straight into leveling or should I get my job level to a certain point so I can have a higher chance of reaping a good hp bonus?

I just got the class and I am before the part where you battle Doga and Unnei for the Keys to Eureka and the Crystal Tower. My job level for BB is only level 4 and my party level is 39. My party Hp at the moment is: Luneth - 1512, Arc - 1487, Refia - 1509, and Ingus - 1591.

I also would love to hear good places for leveling and preparations. Thank you in advance.