Potential the gear you're solid with (like your overall/zhelm/hat/ ) and perhaps after all that, find better end game weapons? Perhaps a self scrolled class glove with potential? It really depends on your funding. It's all about the money. You can hunt forever, but regardless, you'll need NX to cube for decent stats; you'll need millions of mesos to get equips pre-potentialed otherwise.
My Buccaneer, doesn't have prime equips either. Hell he has 54 base dex. I can barely equip the fail scrolled level 120 knuckle i have (104 + 12 w atk potential) and i don't even have much potential at all (no potentialed helm, glove, cape, belt or glasses).