Kay Pam
Slope is taken into account. I'm not sure about commercial ops, but USAF we assumed zero wind unless needed then the 50% of the headwind component. In corporate ops (Global Express, pour moi) we never accounted for the wind, but performance was rarely a limiting factor.
Going back I see you used 0.4G deceleration, I think the 0.8G is better, but dependent on the crew fully applying the brakes. The referenced thread spoke of random tests and pilots typically only achieved 75% of max line pressure as the habit patterns of normal landings caused a bit of "laziness" on brake application. One really has to stand on the pedals to achieve full anti-skid braking.
Merci beaucoup