Wanted graphic Designer or Architectural Designer to design internal layout of van for greyhound transportation

Looking for someone to design the internal layout of my Toyota SLWB Hiace to be used as a transport vehicle for racing greyhounds . the design needs to facilitate 8 dog cages of equal dimensions , as large as the can be without compromising access to get dogs in and out of the cages for walks during transit.

Emphasis on the design is to use space and for airflow as on very hot days we need plenty of airflow to go thur van for the dogs comfort

im wanting this done in a way so i can send to fabricators and they can make up the cages and put them in my van for me . so will need measurements etc .

thanks