67 cuda: 22 to 26 inch radiator swap

Looking for some advice about changing from the stock 22 inch radiator to an aluminum 26 inch radiator in a 67 Barracuda. I'm going from a 273 to a 500 ci stroked 400 block. I'll be widening the opening in the radiator support by 4" to accommodate the wider core. I'd like to use the aluminum radiator and electric fan(s) to save weight on this street performance build.

Please share with me what setups have worked well for you. I live in Texas, so I will need some serious cooling power. I will be running AC and a separate oil cooler, and the car might occasionally be stuck in traffic on 100+ degree, humid days. Thanks!