Fatsia is an excellent choice, for what you want. Although it's not particulary original, or novel.
I have one in a large pot.
The top growth, and expecially the young shoots, can be damaged by frost.
I bring my pot under cover during Winter. The is evergreen and likes to have some light during the Winter. I put mine near a window in an unheated shed. It simply protects the plant from the worst of the weather.
A large pot full of soil is heavy, and not easy to move.
I have seen Fatsias planted in the ground, and left out all Winter. They seem to survive, and can become quite large. Though their survival may depend on the severity of the Winter.