Mixed inventory model

Hi everybody, I would like your comments regarding the following…

Have somebody ever use two different Inventory Models within the same site? For example FIFO for raw material, Weighted avg. for bulk production and again FIFO for packaged products.

Why?

  1. I want AX to automatically allocate first raw material batchs to bulk production (FIFO)

  2. My everyday bulk production (daily work orders) is mixed in huge tanks so there is no way to have separate batchs inside them

  3. My finished products, packaged in different containers, must be shipped FIFO

Is it reasonable or not? Implications? Comments?

Thanks everybody!