This is a private property, the only possible way to take a picture is to zoom from the road. That very much limited my choice regarding your #1 and hence #2. Because to include certain things but not other things in the surrounding has very much to do with the angle and perspective.

I don't understand the #3 point you are making. What do you mean by 光线处理不当? The sun comes from the south west side. Same relative position I was on. I think its perfect lighting angle, because it highlights certain portion of the barn not all of it, which helps to avoid too much detail.