Yeah, you can either auto-tile it that way, or code some custom script that fills in the rest too, i've seen that kind of thing before. Unfortunately with these complex type of cliffs there's not many other ways how to do it i think. Maybe some bigger piece/tile approach could produce decent results too, ill have to think about it for future tilesets for ease of use.
Thank you, I will definitely be making more in the future!
Let me know about the water tiles, maybe i've missed something.