My preference for studio door openings is 36" solid core, with Automatic door bottoms and perimeter seals. 36" provides more space for carrying gear back and forth. I've done 32" where 36" didn't work.
Pemko manufactures most automatic door bottoms (and weatherstripping) in the US and makes several models..., full mortise, partial and surface mount. Link may take you to the model page:
https://www.pemko.com/en/products/do...ms&size=n_18_n
See one or two you like? Search for that model at Amazon or your favorite hardware provider, and you'll likely save some shekels over specialty acoustics suppliers, for the very same item.
For instance, Semi-mortised or surface mount:
https://www.pemko.com/en/products/do...ms&size=n_18_n
Full mortise:
https://www.amazon.com/Automatic-Doo...s%2C260&sr=1-1
Sounds like a good plan. Have fun!
Lance