If there's clouds as part of your sky material, why would you also add clouds as a mesh object? That can lead to poor performance (which is ok on my PC, but older machines might struggle) and art clash, which is the biggest issue. Which version of Unity are you using? I can help build some terrains for you, with a water shader, and everything you need. I'll find some nice looking stylized trees and foliage, and a stylized water shader that will look good. Even better, I'll add a volumetric cloud system, or more. I am burnt out, so excuse my slow work.
Viewing post in The pacifier project comments
A 250 tri culled mesh is totally insignificant in term of performance even on the worst toaster. The art concern is more valid, but that's simply a case of updating the skybox later than the mesh. There's a lot of things like that in the game, due to simply working on it over a long period of time. I probably forgot a ton of other weird stuff that would need a revamp, but for now, it's time to move on. The game is mostly done, and will get a few more updates, but I don't plan of redoing old stuff again and again.