Is there a power meter option available for the wider gearing 43/30 crankset?

No, there is not an available power meter option as the 94mm Bolt Circle Diameter (BCD) of the spider is smaller than the 107mm Force eTap AXS 2x cranksets, to fit the smaller 43/30 chainrings. Quarq offers the Powertap P2 pedal kit for those who require power option.