Fairly nice guide. I agree with almost all of the recommendations. However, Bumba needs to be Lv1 for pvp in order to get Lv40 trans, just like Miseri said.
And, Poyorok Tongtong has invincibility frames as Gladiat said, so lv1 can be okay. Unfortuantly, they were nerfed, so its no longer the entire skill and hard to time; so if you really needed that one point in something else, it would be okay to skip. However, Lime does NOT have a point shortage, unless the build sucks. So Lv1.