Still a problem for me. But I think cholesterol levels are like, 80% genetic. I've known people with terrible diets and excellent cholesterol.
I'm also allergic to nuts, so I might be missing some of the 'plant based diet' benefits by not getting those oils.
Hemp seeds are okay. I'm already doing exactly what you suggest, but with flax seeds (since those also have those omega oils). Not sure which is considered 'better'.