Just dropping in to share my farming tactics. I am currently in edenhall farming that lone adamantoise near a save point. Its the one that fell through the glass the first time you were there( shown via in game CG). I think this is a better way to get the ingots because i can kill one with my team in under 1 min and a half. If i get an ingot,i jsut walk to the save point,save my game and restart my game. If i dont get one,i just restart it. Equipped with the catalogs of course,per hour i can farm about 15 to 25 ingots. (Depending on my luck naturally).

Also, dont farm adamanchelids because they only drop traps and golddust. Only adamantoises drop ingots.

For long gui, you have to complete the ring of cieth stones located in gran pulse. Once you finish them, all the adamanchelids and adamantoises will become long gui and shan long guis. You can distinguish them by a bluish tint on their bodies. Beware though,shao lung gui and long guis cast quake and ultima AT THE BEGINNIG of the battle.

Be warned though that gran pulse will only have 1 wandering adamantoise after you beat the ring of cieth stones. Which is why im now in edenhall farming. Sicen the adamantoise in gran pulse in too far from a save point.

there is no ff 13 dlc