That maybe a good place to start but every panel is not created equal.
Option 1. Follow the above settings up with a self calibration disc, like the Spears & Munsil High-Definition (HD) Blu-ray, or the free download AVS HD 709 TV callibration disc, as a minimum use a Free THX disc & follow the instructions.
Option2. Get a professional in to calibrate it. Cost around £250+