Model railways rulezzzz

I am planning to build N-gauge, but of course I do not have a room for 4,5x6.5m one

So I think it would be nice small German/Swiss/Austrian railroad of epoche I about 1,5x2m. I have already bought a Minitrix start set. Plus I have some HO stuff. My daughter is another trains fan though she's only five years old.
Best Regards!