The Darkest Hearth

One allowance here buys 473,220 EXP, the best of the 6 Lv 54 Carpenter tradecraft leves that record EXP: the runner-up manages 407,160 EXP, 14% less.

Across that rung the return runs from 14,640 EXP to 473,220 EXP per allowance — 6 distinct figures spanning 3132%, so the wrong pick leaves 458,580 EXP of the allowance unspent.

On whether to wait: the best Lv 56 Carpenter tradecraft leve returns 656,800 EXP per allowance, 39% more than the best on this rung, while the Lv 52 rung behind tops out at 423,990 EXP.

At Lv 54 this data holds 54 leves paying EXP across 2 categories: the 48 Tradecraft ones average 296,533 EXP per allowance, the 6 Fieldcraft ones 622,778 EXP, which puts this leve 60% above its own category's average.

Dark Chestnut Spinning Wheel ×1 is a Lv 56 Carpenter recipe, 3 steps deep through 3 intermediates, costing 29 units of raw material and 37 crystals.

Handing that in returns 16,318 EXP and 34 gil for every unit of raw material the order swallows, and the tree needs Blacksmith and Carpenter.