That will then not be a staircase but a ladder. Alternatively, just use a fireman’s pole...
Everything understandable, I just think you have to understand the entire vision of the room. For example, the walls are supposed to be covered with red carpet and the braces on the double ceiling dismantled and possibly LED panels screwed to the remaining support structure according to the "starry sky" principle.
The size is not a problem, it results in a room about 5m long and 3m wide. You can’t play soccer in it, but it doesn’t have to fit an orchestra since only electronic music is created there, which is known to be done with a computer and 1-2 interfaces and monitors.
The studio has to be built in there one way or another.
And honestly, it really has something cool about it, doesn’t it?