Lode It Up
Location
Required Items
Rewards
What the allowance actually buys
One allowance here buys 50,380 EXP, which places it 3rd of the 6 Lv 35 Goldsmith tradecraft leves that record EXP — a figure 1 other leve on the rung matches exactly. The best of them, Actually, It's Loyalty, returns 72,600 EXP for the same allowance, 44% more.
Across that rung the return runs from 30,230 EXP to 72,600 EXP per allowance — 4 distinct figures spanning 140%, so the wrong pick leaves 42,370 EXP of the allowance unspent.
On whether to wait: the best Lv 40 Goldsmith tradecraft leve returns 79,510 EXP per allowance, 10% more than the best on this rung, while the Lv 30 rung behind tops out at 67,730 EXP.
At Lv 35 this data holds 52 leves paying EXP across 2 categories: the 48 Tradecraft ones average 61,959 EXP per allowance, the 4 Fieldcraft ones 378,392 EXP, which puts this leve 19% below its own category's average.
Mythril Ring ×1 is a Lv 36 Goldsmith recipe, 2 steps deep through 2 intermediates, costing 5 units of raw material and 15 crystals.
Handing that in returns 10,076 EXP and 112 gil for every unit of raw material the order swallows, and the tree needs Blacksmith and Goldsmith.