Conceptual design including floor plan.

I am in the process of renovation a school bus to become a mobile convenience store. I am looking for a creative freelancer to provide me with a creative design for the exterior of the bus and also a creative space saving floor plan for the bus. That includes room for a cash register fridge, freezer and accesible storage rakes for regular items you would find in a convenience store. I have attached a picture of the bus we will be converting for reference. Please submit your mock ups with your bid. Best mockup wins the project. The project pays $30 plus a bonus for the best design.