Great advice above. Also, even fancy chest freezers with temp control can let you down in the same way an ice water bath can. If your beer temp rises triggering the chest freezer to come on, that freezer can and will drop ambient temps down to the 40s or lower in the time it takes your beer to drop a single degree. Since the ambient temp is now super cold, your beer will continue to drop.
A heater installed can kick on to raise the temp up, but then you can start a roller coaster ride of up down, up down. Is this all manageable? Yes, but even high tech goodies take a lot of trial and error to dial in IMO.