I'd be fascinated if I didn't already know that
Sweden have done somethingb similar... They made a miniature model of the solar system across all of Sweden, with "Globen" representing the sun. They later placed other smaller buildings all over Sweden where the other planets would be if the sun was that small. Basically, it covers all of Sweden xD
Globen is 71m in diameter, in is close to where I live. Mercury is 2,9 km away at a place called "Slussen", and is 25 cm in diameter.
Venus is at one of Sweden's largest universities, and is 62 cm in diameter, 5,5 km away from Globen (the sun).
Earth is in one of the most well known museums in Sweden, and is 65 cm in diameter, and is 6,5 km away.
Mars is 35 cm in diameter, and is 11,6 km away from the sun.
Jupiter is 7,3 meters in diameter, and is 40km away from the sun, and is close to the airport known as Arlanda.
I could continue, but you get the point... To close it off, Pluto is 12 cm in diameter, and is 300km away from the sun.
So if the sun would be 71 meter in diameter, Pluto would be 300 km away... yeah