So i got every crafting class to 16

[Defteros]

So CUL (surprise surprise) and LWR are entirely optional for Master Crafting?

Anyway I stil plan on maxing the classes, but this should help set a priority list further down the line

actually... no xD
LTW at 50 has Waste Not II, and it's very useful
as for Culinarian, at lv 37 you get Steady Hands II ( that is a must have for master crafting) and, at lv 50, Reclaim ( while this is not a must-have cross class, it can still be useful if you see that you are going to botch the syntesis xD)