Try our new info resource - "Aladdin's Cave" (Main menu)Just added a separate link to Ash's Dropbox thread (shortcut)
With the greatest of respect I think you are worrying needlessly.Think it will look nice when it is finished.I take it the walls will be tiled so any plastering,cabling will not be seen.
...normally the plastering and decorating is done first, then the flooring, then the kitchen units...
Part of my job is fitting curtains / poles we make via our shop. I once ended up drilling through and electic cable running diagonally between switch and light. Guess what the very embarrassed home owner's trade was.....!