The sizes are within 1% so your AWD transfer case will be fine. But those sizes are way too small for the FX. It's 4" smaller in diameter than OEM, they're sized for a G35 or Lexus IS or other much smaller cars than the FX. It will look really silly, like running spares on all 4 wheels. I'd buy new tires before mounting those wheels.
Since those tires are already staggered, I'm assuming the wheels are staggered. What are the widths so we can give you proper tire recommendations?