The kitchen I suggest is based on some of your comments, such as the "L" distribution, the island and the open and light distribution. That´s why I preffered to use semi-high cupboards.
I believe this kitchen shows the many possibilities of your brand.
The colors are intentionally selected to absolutely change the actual furniture you have in the showroom. I think you should make a real change. Also, I think the glossy parts can variate month to month (like removable fronts), so at first I choose sand color, but next month you change the fronts and use orange for instance. This allows you to have a dynamic showroom, which is always changing and gaining more clients.
Instead of doing a furniture schema, since you don´t need it, I put some material suggestions with pics.
Please feel free to change any measures that you consider so it fits your fabrication.
Any questions or further explanation, don´t doubt on contacting me.
Hope you like it !