Muppet, that should be one hell of a mini!
One point though - because of the assymetrical feeds, some cylinders will be receiving more boost than others. Obviously, you haven't got too much space for pipe re-directions.
BUT - you could make the air-cylinder (surge tank, whatever) more like a cone and less like a cylinder. The 'base' of the cone would be on the farthest end of the intake.
..just an idea...