A watercooled intercooler can usually be made very small. When used with a turbocharger the system will cool itself when off boost but I'm not sure how that will work with a supercharger. 8 psi is a quite low pressure, and the temperatures we should expected are around 80 degC when it's 20 degC outside.
For a watercooled system a tank, pump and a small cooler is required. It should also be possible to supercool the water (well, actually coolant should be used) by using CO2 or similar or by using the AC system in the car. However, the simplest way is usually by trying to find an air to air intercooler that will fit, you usually can fit them somehow.
The system Evil Result described is in violation of the thermodynamic laws, heat won't transfer from a colder body to a warmer one. The only way to get this to work is to introduce a compressor for the cooling fluid.