I would INVESTigate before I INVESTed.
Read my post again about 20 cubic feet and EIGHT HUNDRED POUNDS. That's like four and a half times as heavy as a home freezer. All insulation and a bit for a rude size condenser.
Tiny refrigerators ate me out of house and home in the hotel. The little guys were consuming more than refeers six times the size. They never shut off. Remember, enforcement checking in the USA manufacturing sector is spotty at best and fines are a laugh.
Get a money back exchange deal and then use a kWh meter and run the small unit for a few days where the temperature is 80F. Do it at the refrigerator store at risk of losing your meter.
Opinion: This would never be the answer for me. Not when boondocking and losing money on recharging like there was no tomorrow.