You have to determine the options in your area. There are many small cabinet makers in small and largely populated areas, but do you want their look?
Companies like Poggenpohl, Eggersmann and Downsview have varied looks, good reputations and many options for both the exterior finishes and cabinet style and interior details. Some are modular so your spacing is determined by this.
A custom cabinetmaker (often seen on HGTV) is able to fill the entire space wall to wall, floor to ceiling so it is a great option but they may not be able to duplicate the look or interior detailing you are looking for.
Check out Bulthaup for detailing. We also have Linear Fine Woodworking with exotic woods and interesting lighting details. These individualized companies are all over the country. IKEA and other suppliers have modular options. A more complete list of cabinet makers in on the LuxeSpec’s Cabinetry Page.
The hardware needs to be supplied to the cabinetmaker or on site at installation.