Keeping the beer at a constant temperature is a neccessity and thus a luxury. Try to place the refrigeratore side ways to the wall and plumb the pvc out of the side wall.
Use a small
15 CFM blower with a
flex tube inside of a two inch pvc pipe. Be certain that the flex tube is routed to the back of the faucet. Insert the 3/16" ID vinyl (five to six feet) inside of the flex tube. The cold air will blow through the tube keeping the beer line cold and then return back through the two inch pvc.
Try to minimize the distance from the refrigerator to the faucet and always
insulate outside of the two inch pvc.