A company or contractors who install radiant floor heating might be able to help you. The idea i have is this : An electric heater that hugs the underside of the granite. Granite though is a dense rock. How thick is it. For a bench i'm thinking at least 1.5 to 2 inches. It might take a while to heat up though.

You are so right white is never out of fashion. I would set your budget and then look at your options. If you plan to stay in the house for many years then spend to the top of your budget (if that is going to give you a life time of pleasure), if you plan on being at the home for only a short time / few years then I would go mid range so it looks lovely, will have good resale value but you can invest your well earned money to go towards something else as well. Obviously Marble / Granite is the top of the range but there are so many cheaper and very attractive options these days that look just as good.

So we have finally decided on a kitchen design: Taken inspiration from : this is the floor plan. The dinning area will be moved to next to the steps, in front of the alfresco area. The family room will be in front of the kitchen with another outdoor area next to it. But dilemma not is that we cannot decide on plain cabinet doors or shaker style. The colour of the doors will be Satin White with black knobs matching the black granite sink and charcoal glass splash back. The bench top will most likely be something similar to Calcutta Quartz. I like the modern simplicity of plain doors but i don't want it to look too clinical. I like how shaker style adds a bit of character to the whole area, but i don't want it to look too traditional. What do you think? Any other style suggestions?

Is your stone veneer to be laid on a slope? I would want to see an example of that beforehand. The stones in a sloped wall are still set horizontally, but the veneer will have joints that look skewed if laid sloped so it could look quite odd.