How do you see the whole landscape in world composition without forcing it to load in?

I have roughly 90 square KM of landmass in the form of 3 islands. I was wondering how to have it all showing at once, without having it loaded in to keep resource use lower. I am aware of the use of layers, but that loads in the whole bit of that landscape and I just want them to see it, like a distant non colliding static mesh that would seamlessly “disappear” when the player gets close enough and the level loads in. The first is an island in the distance that isn’t showing, the second is a cliff where it simply no longer there.

Try to add an empty obejct lika a actor BluePrint in the levels, toy wan tto load, and move it closer to the location of the map that the players is on.
Tell me it that helped you.