Ahh,yes the Yell/Accumulate strategy. I can name tons of pros for this:

1. You only need Yell, Accumulate, Auto-Potion, and possibly Move HP-UP. Cheap skills indeed.

2. You get totally tons of JP and experience.

3. Yes, you can rape Velius in one hit w/ 999 damage along with Weigraf.

You can also equip Chameleon Robe so his Holy attacks will heal you, or try Math Skill/Flare or Holy or both.

If you're me, then you'll raise it to 50 Speed, 100 Brave, and 99 Physical Attack. You can try a lousy class of which you need JP for. I suggest Summoner or any kind of mage.