The plane level is in Unity and ready to be “built” (the whole mesh is imported as a whole group) and placed around the air where clouds and assets will be added into the mesh. I do think the plane area is too small however, all the textures and assets inside the plane have been successful from both Quixel and Substance Painter.

The scale of the plane is fine and matches up nicely and the windows of the plane (Boolean) came out fine with the textures and UVs of the plane. (Which was one of my biggest issues.)