Spring options for a Fleetwood

Ok so I looooove cushy feel of floating down the road, but man, my wagon feels like a porsche in the corners compared to the FW......

I do have a set of 9C1 springs about, but somewhere in my distant past I heard of folks putting SS springs in too.

Would the SS springs drop the ride height? If so, assuming I'd need different shocks too. Any other considerations?

I see a set of used ones in the FS section and am considering.....