Thanks Wesley!
The dimensions of the field are 220 x 140. I do not have plans to populate the stadium. The red one is going to have a seating capacity of approx. 4500 seats, and I only have about 200 minifigs... Besides that I prefer to have an 'empty' stadium, it looks better to me. I hope to complete the next fase of the stadium in december, I will make a picture of the teams then!