gap 9 = highest in ISRO, if you play in ksro you can have an infinite cap
but i have an important tipp for you.
if you do your own PT, only skill the MAIN TREE from your chars, that means clericer only cleric tree, attackers only wizard tree, and so on!
because so you can have gap0 and rush to lvl105, and after that you can farm in jobcave and then you ll be FF very soon.