I bought a copper submersion wort chiller after my first brewing attempt. That first time, I left the carbuoy out in the snow to cool but it still took forever to cool. I still have the same chiller -- best brewing purchase I ever made. Next time, make physics work for you. Save time and worry less about infection since you can pitch the yeast a lot earlier. Also, yeast starters in a gatorade bottle, FTW.