Big turbo cars are not that hard to drive. No harder to drive then big S/C cars. The centrifgal supercharger acts much in the same way as a turbo as far as power band. The turbo does not act as a parasite to the motor however.
Running windshield washer fluid is a bad idea as the water/color/additives gum up components of the kit.
I would recommend running Methanol if you can get it or buying denatured alcohol at your local wal-mart and running that.