Under the Fool Moon
Location
Required Items
Rewards
What the allowance actually buys
One allowance here buys 1,103,750 EXP, the best on the Lv 78 Blacksmith tradecraft rung — matched exactly by 1 other leve of the 3 there, with the rest trailing at 418,970 EXP or less.
On whether to wait: the best Lv 80 Blacksmith tradecraft leve returns 1,355,750 EXP per allowance, 23% more than the best on this rung, while the Lv 76 rung behind tops out at 1,256,820 EXP.
At Lv 78 this data holds 27 leves paying EXP across 2 categories: the 24 Tradecraft ones average 955,432 EXP per allowance, the 3 Fieldcraft ones 2,129,178 EXP, which puts this leve 16% above its own category's average.
Dwarven Mythril Pistol ×1 is a Lv 78 Blacksmith recipe, 2 steps deep through 5 intermediates, costing 25 units of raw material and 48 crystals.
Handing that in returns 44,150 EXP and 194 gil for every unit of raw material the order swallows, and the tree needs Alchemist, Blacksmith, Carpenter and Goldsmith.