Custom Wallpaper for a Wok Restaurant

We require a custom feature wallpaper to be designed in a grafitti style for a Wok restaurant. Background should consist of buildings in the United Kingdom. The wording "Wok Boys" should be changed to "Wok & Go". It should be vibrant and colourful like the example attached. It should not consist of any real life images, unless they are altered and manipulated to look like graffiti. All images should be high resolution and print ready. The finished size of the wallpaper should be: 5m (w) x 2.5m (h).

Please see attached screen shot.