There's a lot of technical nonsense being bandied around here. First off, the strength and stiffness of wheels is controlled by spoke tension and not by spoke type. The only advantage of bladed spokes is aerodynamics, and they are pointless for everyday use. The most cost-effective spoke is a highly butted spoke like a Sapim Laser 2.0-1.5-2.0 (14 gage at the threads), which is both lightweight and aerodynamic because it presents a small frontal area to the wind.
OP - Based on your weight and usage, I'd recommend 28H 2X rear and 24H or 20H radial front. IDK if the CPX22 are available in those drillings, however.
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