New home but need to swap old walk in shower to a modern L shaped bath with shower over. How difficult is this job and how expensive for parts and a plumber's labour please I'm iskint due to move so any ideas? in Cheshire 2 bed semi small bathroom. Plus need large steel sink and double draingboard fitting and waste water system. Need downstairs toilet and wash hand basin fitted to use in a planned new art workshop in the garage to rinse water soluble paint as students wash art equipment down sink and provide washing / toilet facilities outside my main home for mature students to access. any ideas please?