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Very well done, triple pass, two 1 inch rows of core 240 cubic inch of core. Triple passing coolant in radiator adds another 30% cooling factor...
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Remember ... in order to get air inside the cowling (through rad & oil cooler) you need to first get it out of the cowls. The "rule of thumb" is 2.5 X more surface area open to exit the cowl vs. the surface area entering the cowls. The cool air enters, heats and expands in volume and then has to exit the cowls in a hurry or you build air pressure inside the cowl which reduces the volume of air entering the cowls....up goes the temps.
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