I seek to build a cheese factory underground for the sole purpose of making MBC.
I have a few questions regarding cheese, and also a few somewhat related questions I might as well throw into this thread.
If you can only answer a few, that is still most appreciated.
1. Does a mined out tile count as a "Mine" for producing Jorbonzola?
2. If the answer to the above is yes, with a house that has a cellar underground, I have all the areas needed to produce MBC?
3. Do cupboards placed on a mined out tile explode when a decay tick happens? like cupboards placed outside aboveground?
4. Do any stats affect the quality of cheese? or is the quality dependent on the milk/curd/rennet/trays/tubs used?
5. Does the quality of the jar used to make rennet matter?
Here is a little layout I made, does it look alright ? for more cellar space should I make mansions or timber houses? should the minehole be placed in a different location?

Some questions related to animals
1. Can I use signposts to fence my animals in? if I leash an animal with it pathfind between the posts if I make a gap? or will it get stuck like on roundpole gates?
2. Is it OK to pave the area my animals are in? I recall reading somewhere that when they eat grass it lowers their quality. ( Want it to look tidy too

3. I want more milk producing cows, if I put the ones stuck in the gates with a bull, will they become pregnant again?

Forgive the long post, and thank you in advance for any advice.
Regards,
Arty