Galapagos to optimize site location

Hi everyone, 

Im currently trying to use Galapagos to optimize my site location for an architectural project. I have 8 different parameters and I aim to test the distances between possible site locations (random points) and locations of my parameters (green space, work place, supermarkets, schools, etc..)

I try to find the location with the smallest distance between each parameters.

If anyone has an idea to enhance my current definition,

thanks