Selective Logging

One allowance here buys 954,450 EXP, the best of the 3 Lv 72 Blacksmith tradecraft leves that record EXP: the runner-up manages 826,240 EXP, 13% less.

Across that rung the return runs from 418,810 EXP to 954,450 EXP per allowance — 3 distinct figures spanning 128%, so the wrong pick leaves 535,640 EXP of the allowance unspent.

On whether to wait: the best Lv 74 Blacksmith tradecraft leve returns 646,380 EXP per allowance, 32% less than the best on this rung, while the Lv 70 rung behind tops out at 693,190 EXP.

At Lv 72 this data holds 27 leves paying EXP across 2 categories: the 24 Tradecraft ones average 590,811 EXP per allowance, the 3 Fieldcraft ones 1,405,338 EXP, which puts this leve 62% above its own category's average.

Deepgold Axe ×1 is a Lv 72 Blacksmith recipe, 2 steps deep through 5 intermediates, costing 32 units of raw material and 49 crystals.

Handing that in returns 29,827 EXP and 128 gil for every unit of raw material the order swallows, and the tree needs Alchemist, Blacksmith, Carpenter and Goldsmith.