It's All about Execution

One allowance here buys 629,850 EXP, the best of the 3 Lv 52 Blacksmith tradecraft leves that record EXP: the runner-up manages 480,670 EXP, 24% less.

Across that rung the return runs from 198,900 EXP to 629,850 EXP per allowance — 3 distinct figures spanning 217%, so the wrong pick leaves 430,950 EXP of the allowance unspent.

On whether to wait: the best Lv 54 Blacksmith tradecraft leve returns 477,930 EXP per allowance, 24% less than the best on this rung, while the Lv 50 rung behind tops out at 456,810 EXP.

At Lv 52 this data holds 54 leves paying EXP across 3 categories: the 24 Tradecraft ones average 337,743 EXP per allowance, the 3 Fieldcraft ones 868,208 EXP and the 27 Grand Company ones 177,755 EXP, which puts this leve 86% above its own category's average.

Mythrite Zweihander ×1 is a Lv 53 Blacksmith recipe, 3 steps deep through 8 intermediates, costing 61 units of raw material and 50 crystals.

Handing that in returns 10,325 EXP and 13 gil for every unit of raw material the order swallows, and the tree needs Alchemist, Blacksmith, Carpenter and Leatherworker.