I have a chiller I made years ago. It's just a copper tube with hose fittings on the ends. It's for a huge kettle, and I haven't dug it out to see if it will fit the Braumeister. May have to bend it again.
I will either use this chiller or get something new, and I will bring the temperature down to where I can use the All-Rounder. Getting the beer to 80 may be a different story. It may take half a day with my water in the warm months, so I don't know if my chiller will be sufficient long-term. My pool's temperature was 65 a few days back, and in the summer, I'm sure it approaches 80.
Maybe the All-Rounder was a mistake. Buckets work fine. I just wanted to get something that would do all the trendy stuff.