So I had a guy in for some quotes today. He did 2 bathrooms for me in my previous house for quite a good price so I thought I would try him again. I need to keep the costs as low as possible or else there will be no profit in it. At the moment I think it is going to take £10k to do all the work (which I don't actually have!) and that should give me £10-15k profit hopefully. But every extra will eat into this and it seems that there is plenty of extra work that could be done. I just need to stick to my guns and keep it as simple as possible.