Instead of a dual head evap, use phase change as a liquid chiller. (Evap being a another rad immersed in a liquid.
Look up water cooler chiller for more deets.
correct me if I am wrong, but 300W is pretty easy to hit on a 2011. You will have to keep a good eye on your temps as you clock up, as once you hit near that load... temps will increase sharply.
Very nice work ron, super clean
How much one of these run? I might have to invest in one come summer. Got a 30' long shed I can use with its own electric panel