"LVP" approach
Hell 50 feet you are allready in flare mode, even if visibilty is rediculously low and you are dual land/cat IIIB, sounds like a recipe for a safe landing.
50 Ft. RA, your instruments are worth more than the engines are. Better both engines fail at 50 feet than ILS and RA in 0 vis. assuming you were IIIB. A rough landing is a good landing assuming you did not incounter windshear or an expected heavy crosswind in said scenario..