Question about functionalities

Hey guys,
I was able to answer most of my questions based on the knowledge base but still have some questions left.

Using the manufacturing module, can I have this structure:
Product A consists of:
Product 1 + 2 + 3 + 4

Product B consists of:
Product 1 + 2 + 5 + 6

And so on.
The idea is that I’m using the same raw materials for different products.

Can Action logs tell me what my stock levels were at 31.12.2024 for example?

One of the most important ones is the ability to predict how much stock I should order based on previous data. I want to be able to write the lead time for each supplier and get an alert so we can order and avoid being out of stock based on the sales for the past X days and the lead time.
Since this is a bit niche, I’m fine with some custom build with our developer if needed.

Is there any option to add more stock once we have a shipment? Lets say I receive 5000 units of product X, just write somewhere in the system + 5000 of X instead of going and checking the available quantity and recalculating.

Can we have some type of average COGS? For example, if we have 10 balls for $10 and we receive 10 more balls for $5, can we get the average cost of the available balls to be $7.5? or FIFO/LIFO?

We have a custom status “wc-returned-orders” which we use when customer don’t take their orders from the carrier office (cash on delivery issue). Is it possible to adjust the available quantity automatically, once we get the goods delivered back to us? It will be great if this can happen by some rules since a part of the product we sell is customizable and we throw it away, the other part can be reused. This also might need some custom scripts, so wondering how flexible ATUM is for such stuff.

Thanks in advance!