In this application, the 10w-30 HM would really be the informed one.
The viscosity (100C) is not that different - HTHS of 3.5 vs 3.6 for the 40, and it is known to shear more. Entirely possible that over the life of the fill, the 40 is actually thinner. In Florida, there is zero benefit to the 0w, at the cost of thinner base oil and much higher VII additive, which shear and do not lubricate. For a vehicle that old, an HM add pac is wise. In vehicles I have run both of those oils in (two of them), in each I saw higher consumption with the 0w-40. There's no real compelling reason for the 0w-40 in this application, and several negatives when view head-to-head with the 10w-30 HM.