A/C in an 8? The future is liquid cooling garments not something that draws engine power. I imagine by the time you've got your airplane ready to fly, the technology will have advanced even more and it will be like wearing a light wind breaker now. Plus - you'll probably go to prison when you get caught trying to buy freon off the black market in 7 years.
This study by Kansas State University may be of some value: https://www.lboro.ac.uk/microsites/l...McCullough.pdf
Look forward, lean forward, fall forward