Hi Judith,
Just a word of caution.
Leaving the v floor in may cause a build up of debris and allow v back up into the hive, it could produce fungus, encourage 'things' you don't want, it would in all probablity retain unwanted moisture too. My bees came through the winter in Stirlingshire with an omf alone and a wooden restricted hive entrance, no mouse guard.
Regards
Honeylover