Chain of Command

One allowance here buys 486,300 EXP, the best of the 3 Lv 62 Goldsmith tradecraft leves that record EXP: the runner-up manages 376,880 EXP, 23% less.

Across that rung the return runs from 160,470 EXP to 486,300 EXP per allowance — 3 distinct figures spanning 203%, so the wrong pick leaves 325,830 EXP of the allowance unspent.

On whether to wait: the best Lv 64 Goldsmith tradecraft leve returns 709,140 EXP per allowance, 46% more than the best on this rung, while the Lv 60 rung behind tops out at 376,120 EXP.

At Lv 62 this data holds 27 leves paying EXP across 2 categories: the 24 Tradecraft ones average 417,590 EXP per allowance, the 3 Fieldcraft ones 1,118,055 EXP, which puts this leve 16% above its own category's average.

Koppranickel Temple Chain ×1 is a Lv 63 Goldsmith recipe, 3 steps deep through 3 intermediates, costing 31 units of raw material and 26 crystals.

Handing that in returns 15,687 EXP and 89 gil for every unit of raw material the order swallows, and the tree needs Goldsmith and Weaver.