Using the collision setting to simulate a petticoat with hoops

I am working on a Dirndl outfit, this is a traditionnal outfit from germany and austria, a long gown with a sleeveless bodice, a blouse with puffy sleeves and an apron, sometime with a lace petticoat.

In my first try i was not happy how the dress was falling along the body, so i started to experiment some ideas. i have added a petticoat and played with the Collision Offset and Collision Depth settings for the dress colliding the petticoat.

For obvious reason the petticoat must start below the waistline.

Left : i have just added the petticoat and the settings are 0.1 my usual start point, the petticoat poke through the Dress, i probably need to set 0.2 or 0.3 minimum

Middle : settings are 1, a good balance, the effect show but not too much.

Right : settings are 2, effect is exagerated and no more pretty, the waistline is pushed too up.