Cut out & create natural shadows to furniture

I have 20-25 images of furniture which are shot in a room, following work is required: they need to be cut out (clip path created) (its simple straight line furniture) then change the background to light grey or white to make it appear as if the furniture was shot in a real studio with real shadows Some chrome needs brightened & cleaned furnishing fabric to be retouched in few shots. I expect the job to be done in 3 days time after I select the final bidder.