Those are my exact predictions as well, I think they fit perfectly. I'm really hoping Tsutajaa will get Nasty Plot, and that Mijumaru will get a decent fighting move other than brick break, hopefully Superpower. Close Combat is out of the question for that Narwhalrus. Since it looks pretty slow, it will probably work best as a bulky offensive Pokemon, unless it's half rock and gets Rock Polish. Megahorn is also very likely, which would be nice.
Btw, Melkor updated with this silhouette of the final Kurumiru evo, which supposedly keeps it's Bug/Grass Typing, which is cool. It actually seems to look pretty decent, thankfully, as Kurumiru is probably my favorite early game bug now.