Are you happy with the Pioneer set up?
I see one that is 208/230 volt single phase.
Here:  
https://www.pioneerminisplit.com/pro...with-16-ft-kit
Thinking of doing something like this in our downstairs ping pong / exercise room.   Since my heart procedures, I have been doing 5 miles a morning on the treadmill.
Current set up is pretty mickey mouse.
I see from the installation instructions, the inside to outside hole is 2.5 inches.  I have to drill through 19.5 inches of brick wall.