OP, putting materia in crafter or gatherer gear before 60 is imo a waste. You'd be better served staying current with the gear curve, and trying to craft or have a FC buddy craft you HQ varieties of the most current gear for your level. If you do that, and devote a cursory effort to understanding how your crafting actions should flow, you'll have a decent enough chance to HQ your leve items, and the marginal gain from melding won't balance out the fact that you should ideally be replacing that gear in 2-3 levels anyway.
