I believe that the P-40N would be a better choice. Largely because the P-40F was manufactured in lesser numbers, and its service was largely confined to North Africa, Sicily and Italy.
Ironically, the Packard Merlin installed in the P-40F only marginally improved performance at altitude. However, with the updraft carb, it proved to be far more susceptable to ingestion of sand and dust than the P-40E/K/M which had its carb inlet atop the engine cowling, rather than sharing space with the radiator and oil cooler cores as did the P-40F. As a result, the P-40F suffered increased maintenance needs as well as a higher engine failure rate than the Allison power aircraft.
My regards,
Widewing