Misfiring during acceleration does sound like an ignition problem. Fuel problems usually have a flat, no power feel. I would definitely check the ignition wire resistance. I had a misfiring problem with my Camry and replaced the fuel filter, checked every fuel injection and emissions component and when I finally tested the plug wires they had infinite resistance. I can't believe the car ran at all.
I'm not sure if your car has resistor wires or resistors in the spark plug boots like my 260e but either way I would check them out.