Dilemma #2 Here's an elevation of the powder room which has a 120mm drop down in the stone then a 180mm laminate panel... The idea is for it to look a bit (although not exactly) like this... Our floor tiles are similar (if not the same) as the above photo and go up the wall to below the vanity, the 180mm panel (which photo doesn't have - incidentally, what do you think of the shelf underneath the vanity?) is a black laminate and the feature tile between the vanity and the mirror (incidentally, should we take the mirror to the ceiling?) is Jewels Preto: So which colour should we go for the stone top, Lagoon or Blanco Zeus??... I'm swaying towards Lagoon as it's a bit more of a feature than just plain white, but I'm unsure :/

I just finished my kitchen with Laminex riven wood grain in sublime teak, Caesarstone buttermilk bench top and splash back, and Preference oak in parana colour. It is an earth tone brownish hue and am quite happy with that. Your greyish colour theme with dark wood accent is nice. There are many shades of wood floor that you can choose to match or contrast with the rest of kitchen.

Have you been to visit some kitchen showrooms? You can customise the photo search here on Houzz quite a bit. For example, you can simply select [dark wood[(https://www.houzz.com.au/photos/kitchen-design-ideas-with-dark-wood-cabinets-phbr1-bp~t_10444~a_17-103) cabinet finish in the filter options. Then add more filters like floor colour, kitchen layout, cabinet style, wall colour etc if you wish. Leave the benchtop and splashback options open and see what results you get. You can then save any photos that appeal to your ideabook.

White-matte cabinets (flat panel, not shaker) and white bench (or maybe epoxy sealed marine ply??...siriuskey can tell you about that), mirror splash. Love the ceilings. I personally would go for a modern, stream-line, no handles, integrated appliances look. This space has real potential to be very cool, even with the slate. It doesn't need any more more texture or darkness. This is a nice kitchen, you should be able to sell it on ebay.