Yes, I used it to tape and mud a new bedroom I made.
It can smell a little bad for a few days after getting the mud up - but, it is nice to work with, and the dust is low when sanding (compared to other products out there).
Not really. I would use 45 or 90 minute easy sand in a bag.
You may need to add a little water and mix well. It should go through just fine.
Yes it is very easy to work with.
What’s a “Flowmaster?”
Very long dry time compaired to conventional