I dont think i have a Vidu length answer in me this morning, but theres one good tip they missed. You have BTN at 66 and FSH at 70. That means you can gather the good treasure maps. The easiest spot(to me anyway) would probly be the twincoon nodes northeast of Ala Ghiri in the peaks. Start digging(or fishing) up one gazelle map every day. If any of the other FC members can do the same and dont mind contributing, get them to as well. If you havent done the quest for treasure hunting yet, its in east la nosca(Treasures and Tribulations). Without jumping through many hoops you can store 5(+) of the same map - one open in key items screen, one in inventory, one in saddlebag, one on each retainer. Every couple days when youve got a few of the maps, get a group together from your FC to run them. The initial map fight is easy enough for 2 or 3 people to handle(if not quite soloable), and any map could dump all sorts of rewards on you from a stack of gil to some furnishings to rare(ish) crafting mats. Thats all well and good, but what youre looking for is a portal. When the portal opens you have roughly 10 mins to enter and at this point you can recruit more people to join the team for a quick dungeon clear(if needed). The more the easier, but i would say 4+ is a good baseline. The dungeon can be a little chaotic. Every floor has a giant chest and a set of enemies that come out to protect it. Win the fight, claim your reward, then test your luck - you get to pick which door you try to open to see how much deeper you can go in the dungeon. There are side-bosses that sometimes spawn to make the fights more hectic, there are hidden enemies that appear for a little while then run away - and any of them defeated will drop extra treasure. The deeper you go, the more you get - right up to the boss fight on the bottem(7th) floor. A full clear guarantees you another map that goes to an even deeper dungeon(these ones always have portals). A single clear of the whole thing is worth like a million+ gil - for each party member, and some of the rewards sell for several times that. A full clear takes a lot of luck, but an hour or two of running just maps and the top few floors of each dungeon before getting kicked out can easily net you several hundred thousand each, and with luck some of the rarer stuff to sell(minis, music, furnishings and crafting mats that cant be found anywhere else).