I don't like the sound of him, if he is that good he would not be able to start tomorrow,he would be to busy, also the fact the estimate has got a huge gap of �800, that is not a good sign also the �400 for lifting carpets, we do that all the time,that should be within the estimate, it is virtually impossible to spend just 10 minutes properly estimating how much a job will be, and don't forget an estimate is a rough idea, �2000.00 could end up at �3000.00 I would get another price, and tell the electrician you are willing to lift the boards and chase the walls,it will save you a couple of hundred and save him time, he would mark on the wall where to chase and what boards to lift, good luck, Ray