rehousing broody while shes on eggs

[karminski]

i want to convert a plastic large storage bin into a hen house { seen it done on another site and it looks good } am hoping to do it over the next day or so would it be ok to move my maran whos sitting on eggs or shall i wait tell they have hatched thats if they were fertile ? the rabbit hutch i feel would be to small for 6 chicks an mum even though its a large hutch last year wasnt a prob for her and the chicks as she had a shed of her own , there due to hatch around the 12 - 15 may .