Restaurant Exterior Light Remodeling

I am looking to have the exterior lighting of my restaurant remodeled, and am considering LED lighting as my best option. I have a rough idea of what type of lighting I want, but am open to suggestions to get the best possible look for the exterior of my space. I need lights installed on the parapet of a one story building and I want all the existing signs to be converted to super bright LEDs to brighten up the building. I need the project to be completed within a few weeks.