It's worth to do a linear scale miniature of the solar system.
At the 1:10^9 scale, it fits well within a farm or a big park, all the planets are at a viable size, and the Sun is not too big.
At the 1:10^9 scale, it fits well within a farm or a big park, all the planets are at a viable size, and the Sun is not too big.
The Sun would be 1.5 meters across, the Earth would be 1.2 centimeters across, and the whole thing would be 4.5 km from the Sun to Pluto.
EDIT: Wait! I think this is exactly the scale you're proposing: http://www.jeffreybennett.com/model-solar-systems/voyage-sca...
EDIT2: Well, actually 10^10, so another order of magnitude smaller than 10^9.