Looks like you have a pretty good handle on the ventilation.
I would suggest replacing the corrugated sections with as much smooth wall ducting as you can.
The ribbing causes all kinds of turbulence inside the ducting and can reduce the 'effective size' of it by as much as 30%.
If you just put a foot or two where you absolutely have to be able to bend it to put it out side you will save a lot of turbulence.
Oh and make sure the out put end is at least ten feet from where your 'make up air' comes in.
Otherwise you can wind up sucking your fumes right back in to the studio in a loop.
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