May I suggest (perhaps late for you but maybe for others): Rather than focus on only one source for your next equipment, try multiple?
Spend a little time trying Iffy.
Spend a little time trying to gather tomes.
Spend a little time trying to make some gil.

At the end of the day, one of the 3 will come true. Tomes and Gil are at least guaranteed, so they are good fallback if the randomizer on Iffy does not fall in your favour. And random being random, it could fail 1000 times in a row, then give you 1000 paladin swords in a row ^.^;;;

For those who want to feel lucky, there is things like Iffy. For those who want a sure thing, there are tomes & gil & seals. Me, I pick the one that gives me the least frustration : Crafting ^^;;