save your money on that pump. This is the one i've been using with almost pure glycol and no problems.
http://www.amazon.com/gp/product/B002JPIQ1Y/?tag=skimlinks_replacement-20
It runs even when the water mix I had froze almost solid in the dorm fridge. (thats why I mix heavy on the RV Antifreeze side.)
Also you'll want whatever you use as a reservoir to be almost sealed so it doesn't evaporate onto the cooling element inside the fridge. Then in between batches thaw out the fridge. I used one of my old 6 gallon fermenting buckets with holes the same diameter as the hose drilled in the lid. It takes some force to push the hose through em but it almost seals air tight. You don't want to make a sealed system because you'll have to mess with pressure release valves and bleeding it etc.
I've done 15 batches through it and love it. Simple, easy to clean, light and easy to move.