IMHO, a perfect solution to a scenario that, were it for real, would probably end up killing you and your pax by cooking you all in the air. There's only one place for an aircraft with fire and that is on the ground. You had autoland available. Even with no more than a Cat1 ILS on the aircraft if I was on the centreline and the glideslop at DA I'd keep on coming down. As for evacuation in low viz, that's a hazard irrespective of whether you've just landed below minimums.