Okay - I've finally got it!....

I can see why the KC + IC is a problem.....some of the time....
If your Charge Air Cooler (CAC) water discharge temp is lower than ambient, the IC (behind your bumper) will effectively heat the incoming water up to ambient....then it runs through the KC and - the Air Conditioning (AC) system loaded up by the KC - is draining a couple of kW form the crank needlessly.

however.....when your cranked towards >15psi...super charger (SC) discharge temps are so high - your CAC water discharge temp would go higher than ambient...then your IC would come in handy, trimming temps and then allowing the KC to do the remainder. (see caveat below*)

see schems below.
3 valves are shown A, B and C.

For KC only - open B and close A
For KC+IC - close B and open A
C is not essential unless you wanted to isolate the KC - but there would be a possibility of it freezing up. But would allow you to turn off the AC and improve economy....another time hey....

I was thinking you could probably use the same solenoid valves used for the cabin heater circuit - that is - buy a spare OEM unit and integrate it into the arrangement shown.
Then by ustilising my (work in progress) CAC flow/temperature montioring system (as well as an IC ambient air temp sensor)
- when CAC discharge temp > ambient temp + 2degC - open IC path (Open B and close A)
- when CAC discharge temp < ambient temp - 2degC - close IC path (Close B and open A)

*Caveate....
when you are pushing these kinds of psi - the AC may turn off at high rpm - I read somewhere. Do you have to turn it back on manually?..painful if so.
Another mod to circumvent this would be to add an insulated tank - but after the KC and before the pump....storing your cold water ready for your next WOT.

.......of course you could make it all simple and just not have valves and simply disconnect your IC...as AMX1397 has done...but I dont think racing wise you'd have enough cooling....but I could be wrong.....