Fitting a kitchen

I'll be tied up all this week fitting a kitchen in Eastbourne. The old kitchen units, tiles, plumbing and wiring have been ripped out today and thrown in a skip from Haulaway Skip Hire. What has been exposed is a decade or so of electrical bodges. Oliver, our certified (in more ways than one) electrician, is going to be sorting out the whole of the electrics. A new kitchen ring main will be installed and all new switch gear. With all the tiles off the walls and the units out of the way, there is no better time to do the re-plumbing and rewiring. Once that is all done Raf, the team's plasterer will set about skimming all the walls. Then all that is left is to install the new units and appliances from Howdens. By Friday the kitchen should be finished... I wonder, what could possibly go wrong?