In my model one AU was equal to the distance from Universal Studios Los Angeles to Disneyland Los Angeles or 54Km. To find the distance from the sun to mercury I had to multiply 54 by 0.387 (How many AU Mercury is from the sun), For Venus I had to multiply 54 by 0.722, for Mars I had to multiply 54 by 1.52, ect…

You can see my map here:

https://www.google.com/maps/d/edit?mid=zkB-Alojoa6w.k56RU9tdherM&usp=sharing