I'm a sucker for the neatness of the square.

My dear departed mother was never much of a drinker but every Christmas morning the two of us would have some form of champagne cocktail. Often a Mimosa, which went down a treat. BUT the year we tried a champagne and strawberry liqueur mix was a disaster. Well not for mum and I, we giggled through until mid afternoon when crashed for a nap. When we woke we realised the peas went unserved, some people had the wrong presents and there was something very charred in the oven. The family still talks about the year we were too tipsy to cook lunch. This year it'll be straight champagne (and after 8 years I still miss her dreadfully).

Got my answer - non combustible material such as, natural stone - marble, granite or concrete etc.

I wouldn't go those dark laminate kitchen cupboards. I have the exact same and I absolutely loathe them now. I use to love the darker colours but now I wish I had just done them white, light gray or even the dark blue (although dark blue worries me a little too!). That dark laminate brown is such an absolute pain to keep clean. They show up every mark. I like your stone bench tops though but would look at other options to create the look you're hoping for with the joins and waterfall benches etc. Goodluck with it all!