I have a similar build with a phenolic intercooler and an air to water heat exchanger. I have been thinking about adding a turbo to the mix. the idea i'm stuck on now is just adding the turbo kit and using the air to water intercooler with the block off plate installed. a friend told me that to make 400 hp, the intake manifold has to support 600 cfm of air, and the gen 5 pushes about 540 cfm, so I think my ported supercharger case and machined lim will support about 400 hp.
since the air to air intercooler came with the kit, you might as well use it, and probably should use the intake setup Decker suggested.
