Here's my set up. It is a 3 row radiator and the water pump is the aluminum type, and a big block fan with the factory clutch. The thermostat is a 165. I runs about 185* in the summer time. Here is a picture.
Is your Engine/Trans pushed back from factory location? You have a lot more room between the radiator and the fan than I do. I only have 3 inches from the radiator the water pump pulley.