Would like to have a ballpark estimate of the hours necessary to rough-in the plumbing in a new 500 sq. ft. first floor cottage. Delling will have wood flooring. Bathroom will have basic tub/shower, water closet, and a lavatory. The kitchen fixtures will consist of a sink and a dishwasher. Near the bathroom will be a 35/40 gal water heater. I would also like to have a rough idea of the hours necessary to install the five fixtures and the water heater. I'm not a trained plumber, but have some knowledge and handy with tools. Appreciate any information anyone cares to offer.