A few thoughts Dave. not sure about the lengh of pipe, but looking at your setup before you move it you could extend the in/out pipes by 10ft and see what happens,
another idea would be to leave the cooler where it is and fabricate an air box ( i think the air cleaner box from a golf injection might do) for the back of the cooler include two 120mm 12v computer cooling fans inplace of the filter, then you could pipe cooler air from the outside of the car, or you may even be able to move the cooler out of the engine bay and fit it in the rear quarter panel with external grill and fan assist. just a few things to mull over.