Let's slow down a bit. A lot of conflicting advice. Yes, identify what you are trying to accomplish. No need to over insulate unless you want it quiet for people outside the room.
Once you add drywall, you are adding an element/surface you will need to treat.
Raw ceiling joists are inherently good acoustic surfaces. It may look ugly...but adding drywall...again, is adding a problem you will need to address.
The room is small, yes...but making it even smaller to get 'your golden ratio' may not be the best tactic if you can make it 'feel longer acoustically' through other means.
Your room is somewhat challenging. I would spend a year learning about acoustics and sketching various scenarios out before breaking ground.
Once you add drywall, you are adding an element/surface you will need to treat.
Raw ceiling joists are inherently good acoustic surfaces. It may look ugly...but adding drywall...again, is adding a problem you will need to address.
The room is small, yes...but making it even smaller to get 'your golden ratio' may not be the best tactic if you can make it 'feel longer acoustically' through other means.
Your room is somewhat challenging. I would spend a year learning about acoustics and sketching various scenarios out before breaking ground.