Hi,
You need to start with smaller tasks.
-- can you have a rigid body ball falling on a tilted collider
-- can you put static obstacles for the ball to collide against as it falls
-- can you create a collider that you control for rotation and kick the ball
as far as physics setup, I would go for a 2d physics IF your pinball is flat, I know some pinball are in 3d with some weird paths and multi level layout, but if you start with all this, go for 2d.
Bye,
Jean