Idea for Ghetto lagerator

I've been thinking about rigging a ghetto lagerator by setting up a water bath in a cooler using a small pump on a thermostat to pump water through vinyl tubing into my kegerator where I could either attach it to a copper chiller or just coil the vinyl tubing; then have it return to the water bath. The thermostat would kick on the pump circulating the water through the fridge whenever the temp was too high. What do you think?

This is what I do. Would be a lot easier if the reservoir was in a fridge!

IDK my fav ghetto lagerator was the hard insulation box over the AC vent... It's around here somewhere i'm just too lazy to find it now