I think you need more radiator and possibly a second pump, but I think that system might work as good as something from thermaltake or the barebones swiftech kit. See if you can get two radiators... One on the inside and one on the outside with a fan on either end or both. then, just drill some holes on the side of the case to let the tubes in from the outside and hook it all up. I just think you need way more dissipating space.
That would be a cool setup for a little shuttle though
