I'd recommend anyone with materia worries to stock up on the mats for Tinctures and Craftmans Cunning Syrup (fairly easy with retainers on the job). Once they pop up starred for Rowena's turn ins, spend an hour or two spamming them. Then repeat this any other days they're starred and you're in the mood.
I farmed more than enough VII's and VIII's to max meld whatever we get in 5.1 weeks ago.