Kitchen design apps??

What are you thinking colourwise for your kitchen, do you like the dark navy in the mantle image? that would work on the island, maybe mixing it with some walnut as a worktop or possibly a feature dark stone?

I've attached an image of the revised mantle section, it can't work quite like the image as I'd expect the ceiling height in that image is around 2.7 metres compared with your 2.2 metres. This is an approximation using standard height drawer fronts as fascia panels so it could be recreated by any kitchen company.