Those are the premises, not the assumptions, but I'd do away with each of them. The ideas that "God" "does" things and "wants" things contain the assumption that "God" is a thing that is not everything (something that flies in the face of omnipresence); and the idea that the judgement "awful" in someway belongs to the thing itself.Then you must do away with one of the three assumtions (which it sounds like you are ready to do). So, which one goes?
- God can do anything.
- God wants what's best for us.
- Awful things happen to us.