Maybe don't give up so easily, there are plenty of advantages to running W2A. Google Sy/Ty or GMC Syclone or Typhoon for some inspiration. (The Sy/Ty engine is essentially 3/4 of a 350 Chev smallblock.)
I don't think that an A/C condensor or oil cooler will be the best radiator though. Look for a small car radiator or large heater core instead. Maybe from a truck? The pump would be best operated in response to temperature, though using boost pressure would anticipate the temp. rise. The IC acts as heat sink as much as a heat exchanger with W2A.