Your collocation has at least one disadvantage: high cost, tired practice, jewelry and transformation can't provide each other with materials, enchantment and mixing can't provide each other with materials. Unless you practice two numbers at the same time, you have to keep all the information, or you have to spend money to buy it.

In fact, the best professional collocation is conventional collocation, such as alchemy, inscription and herb picking, jewelry, forging, engineering and mining, enchantment and tailoring, tanning and peeling.