Finally i've done this project, almost everything was made in unreal, modeling in houdini, except clouds, it was made in post.
And here is a video from unreal, but its earlier version so there isnt a bushes and a lot of details yet. https://drive.google.com/file/d/1Xx-raROsXOvQ8vr1dNxiqEKBaXwkdsnQ/view?usp=sharing