I'd recommend a 2 pass radiator if you can find one to fit. I originally had a 4 row single pass radiator in my CR and it worked fine until stop n go traffic on a 95 degree plus day, then it was marginal. I changed it out for an aluminum 2 pass radiator and now the temperature stays steady even on the hottest of days and worst of traffic. I had the 2 pass custom made by Mattson's "The Fan Man" (
https://the-fan-man.com/ ) so it would mount in the same places as the previous radiator. They do quality work and can make a nice looking shroud with electric fan mount for you as well.
I bought an AFR 2 pass radiator for my Miura project car from Summit so there are some off the shelf options for them as well.