The hardwood floor is down in the kitchen and I spent much of the weekend playing with the placement of the island. In order for it go back the direction it was before we would have had to move the extractor vent to the west by 6 " - and there is a joist in the way! We could "jump" the joist but there would be a lot of holes in the ceiling, possibly some exploratory cuts in the wall behind Verity's bed where the hvac system runs to the exterior blower and it all seemed a lot of work, plus there was the possibility of a reduction in venting power if we had to insert an elbow into the vent pipe. An easier option was to just pivot the island and run it north-south rather than east-west.
Once it was all taped out something magical happened to the feel of the kitchen, it just fit better in the room - opening it up and emphasizing its trapezoid shape. This room is the same size as the great room but it never felt as large, now the kitchen will be one large area rather than two divided and disjointed spaces. We'll also end up with fewer pinch points than before - by using the full width of the extractor fan cutout the island will be relocated 5" towards the eating area, giving me a 36" pass at the tightest place, everywhere else will have 40" minimum clear. A big selling point is that I'll be able to cook while looking out at the yard - taking in the scenery (and watching the wildlife) from my island in a sea of hardwood.