I am looking to do a keezer project myself and there is a 9 cu ft kenmore on craigslist in town. I'm sure bigger is better but any thoughts on whether this would be big enough for 4-6 cornies and an occasional carboy?
9cu ft should be plenty for 4-6, especially with a collar. There is a thread on here somewhere that has sizing diagrams for just about every freezer model ever, so if you look around you can probably find pretty close to your model. My 7cf fits 5 and the co2 with a collar.