Good Morning Jörg.....
Mmmmmm, this is quite difficult..... But here are my thoughts......
For the left of the road with the level crossing I think this will work quite nice, I like the look and the flow of the buildings and it looks interesting.
Picture 01.
Then you do the road with the level crossing in the back, will make a very nice scene

Then for the right , I definitely do not like that Yellow coloured building. and yes, I think it is to big also.
The corner, yes, would be good to find a corner building there, will round it off nicely.
So Picture 02 works for me.....

That's my opinion. Oh, sorry...... But that station....... No, I do not like it...... but that is just me......
Cool, enjoy and speak again.
Cheers Evert